UAT sign-off should come from business process owners, not the implementation team or the project manager. For an ERP implementation, this typically means the Finance Director or Controller for finance processes, the Operations Manager or Supply Chain Director for warehouse and purchasing, and the relevant department head for any other in-scope business area. The IT Director or CIO may co-sign from a technical perspective. The steering committee or project sponsor provides the final go/no-go sign-off based on the business area approvals. If the consultants are signing off their own work, it is not genuine UAT sign-off.

UAT Sign-Off Process: How to Get Client Approval for Go-Live

68%

of ERP projects experience go-live delays, most traced to inadequate sign-off process

more costly to fix defects post-go-live than during UAT

ERP implementations go live with zero defects. Sign-off is about acceptable thresholds, not perfection

Getting UAT sign-off on an ERP implementation is one of the most politically charged moments in any project. You have business users who have found real issues, a go-live date that is rapidly approaching, a steering committee who want to hear everything is fine, and a contract that says the client needs to sign something before you can proceed. Handled badly, this moment causes delays, disputes, and damaged relationships. Handled well, it is a structured, evidence-based process that gives everyone confidence in the go/no-go decision.

This guide covers the UAT sign-off process end to end: what it actually means legally and contractually, who needs to be involved, what the sign-off document should contain, and how to handle the situations that most commonly derail it. Whether you are running Business Central UAT, a SAP implementation, or any other ERP go-live, the principles are the same.

1. What UAT Sign-Off Actually Means (and Why It Matters Legally)

UAT sign-off is not a formality. It is a contractual and operational milestone with real consequences. When a business stakeholder signs off UAT, they are formally stating that the system meets the requirements that were agreed at the start of the project, and that the business accepts the system for production use. From that point, the nature of the consultant-client relationship changes: defects found after go-live are typically treated differently from defects found during UAT, both commercially and contractually.

This matters in several ways:

Contractual liability: most ERP implementation contracts include a clause that links payment milestones to UAT sign-off. Signing off UAT often triggers a payment, and it also establishes what was in scope and accepted. Post-go-live defect remediation that was not covered in sign-off conditions can quickly become a commercial dispute
Risk transfer: sign-off is the point at which the client formally accepts responsibility for operating the system. Outstanding defects that are accepted at sign-off need to be documented precisely, because any issues arising from them post-go-live belong to the client unless explicitly agreed otherwise
Cutover authority: most project governance frameworks require formal sign-off before a cutover plan can be initiated. Without it, the project manager does not have the authority to proceed with data migration, system cutover, and go-live
Audit trail: in regulated industries, finance, healthcare, government, the sign-off process forms part of the audit trail that demonstrates the system was tested and validated before it was used for live business operations

Do not confuse sign-off with approval:

Sign-off on UAT is not the same as go-live approval. Sign-off says the testing is complete and the system meets requirements. Go-live approval is a broader decision that also covers data migration, training, infrastructure, and the support model. Both are needed. Neither should be assumed.

2. Who Needs to Sign Off UAT

The single most common failure in UAT sign-off is having the wrong people sign it. The project manager, the IT Director, or the lead consultant should not be the primary signatories. The people who sign off UAT must be the business process owners who are accountable for the processes being tested. Here is how to structure it.

Business Process Owners

Each in-scope business area needs a named sign-off authority. This is typically a senior manager or director who is accountable for that function. For a typical ERP implementation:

Finance: Finance Director, Financial Controller, or Head of Finance. They sign off on AP, AR, GL, bank reconciliation, VAT, and reporting
Procurement and supply chain: Operations Director, Supply Chain Manager, or Purchasing Manager. They sign off on purchase orders, supplier management, inventory, and warehouse processes
Sales and customer service: Sales Director or Head of Customer Operations. They sign off on order management, pricing, invoicing, and customer-facing processes
Manufacturing (where applicable): Production Manager or Head of Operations. They sign off on production orders, BOMs, and capacity planning

IT Sign-Off

The IT Director or Head of IT provides a separate sign-off confirming that the technical infrastructure is ready: integrations are functioning, security configuration has been reviewed, user access controls are correct, and the environment meets the performance requirements established during the project. This is distinct from the business process sign-off and should not be conflated with it.

Steering Committee or Project Sponsor

The project sponsor or steering committee chair provides the final go/no-go sign-off. This is not a rubber stamp. It should be an informed decision based on the business process sign-offs, the outstanding defect log, and the risk acceptance statements. The project sponsor is accountable for the investment decision, and they need to understand what they are approving.

What not to do:

Do not accept a single sign-off from the client-side project manager on behalf of all business areas. This creates a single point of failure and leaves you exposed if a business process owner later claims they were not consulted. Get named sign-off from each accountable process owner, in writing, against the specific area they are responsible for.

3. What the UAT Sign-Off Document Should Contain

The sign-off document is your evidence that UAT was conducted properly and that the business made an informed decision to proceed. It needs to be specific, dated, and version-controlled. Here is the structure that works in practice.

Section	What to Include	Why It Matters
Test Summary	Total test cases executed, pass/fail counts, pass rate by process area, UAT environment and build version tested, data migration run reference, testing period dates	Establishes the scope and completeness of testing. Without this, the document is an opinion, not evidence
Outstanding Defects Log	Each open defect with ID, severity (Critical/High/Medium/Low), description, business impact, proposed workaround, remediation plan and target date, and named owner	Makes the risk visible and explicit. Defects that are not documented here cannot be raised later as a reason the sign-off was invalid
Risk Acceptance Statements	For each outstanding defect or known limitation: a formal statement that the business accepts the risk of proceeding with this item unresolved, signed by the relevant process owner	Protects both parties. The client cannot later claim they were unaware of a risk that is explicitly documented and signed
Sign-Off Signatures	Named individual, role, business area they are signing off, date, and signature (wet or electronic). One section per business process owner, plus IT sign-off and project sponsor	The document is worthless without named, dated signatures. Verbal agreement is not sign-off

Keep the document concise. A sign-off document is not a test report. It is a decision record. The detailed test execution data and defect logs live in your UAT management platform. The sign-off document references that data and records the decision made on the basis of it.

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4. Sign-Off Criteria: What Pass Rates Are Acceptable

One of the most important conversations to have before UAT begins is the one about acceptance criteria. What does the business need to see before they will sign off? If you wait until the end of UAT to answer this question, you will have it under the worst possible conditions: with a go-live date looming, defects on the board, and stakeholders under pressure.

There is no such thing as zero defects at go-live.

Sign-off criteria should define acceptable thresholds, not perfection. Every ERP implementation goes live with known issues. The question is not whether defects exist, but whether the defects that exist are acceptable, documented, and have a plan. Anyone who tells you otherwise has not delivered a live ERP implementation.

Here is a practical framework for defining acceptance criteria that you can agree with the client at the start of UAT:

Critical Defects: zero tolerance

A critical defect is one that prevents a core business process from functioning and has no viable workaround. Examples: the system will not post a sales invoice, VAT is calculating incorrectly on all transactions, data migration has corrupted the chart of accounts. Critical defects must be resolved and retested before sign-off. There is no negotiation on this.

High Defects: acceptable only with documented workaround and fix date

A high defect impairs a business process but does not make it impossible. A workaround exists, but it adds manual steps or risk. Examples: the bank statement import format does not match, requiring manual journal entries for the first month; a report shows incorrect subtotals but the underlying data is correct. High defects can be accepted at sign-off, but only with an explicit workaround, a named owner, and a committed fix date. They need a risk acceptance statement signed by the relevant process owner.

Medium and Low Defects: log, prioritise, and schedule post-go-live

Medium defects cause inconvenience but do not materially impair business operations. Low defects are cosmetic or minor. Both can be carried into production with proper documentation. They should be logged in the defect backlog, prioritised, and included in a post-go-live release schedule.

In terms of pass rates, a common threshold for ERP implementations is 95% or above on critical and high-priority UAT test cases before sign-off is considered. However, the specific threshold should be agreed with the client at the start of UAT and documented in the UAT test plan. A 95% pass rate with five critical failures is not acceptable. A 90% pass rate with all remaining failures in the medium-low category, all with workarounds, may be. Context matters more than the number.

5. Common Blockers to Sign-Off and How to Handle Them

Even when the testing has gone well, the sign-off process itself creates its own set of problems. Here are the most common ones and what to do about them.

The Client Keeps Finding New Issues

This is the most common blocker. As the go-live date approaches, anxiety rises, and testers who have been working through structured test scripts start exploring outside the agreed scope. They find things that were always there, things that are working as designed but not how they imagined, and occasionally genuine new defects.

The approach here is disciplined triage. Every new item that surfaces during sign-off should be immediately assessed against three questions: Is this a defect against an agreed requirement, or is it a new requirement? Was this in scope for the current release? Does it prevent sign-off given the agreed acceptance criteria? If it is a new requirement, it goes to change control. If it is in scope and blocks a core process, it gets fixed. If it is in scope but does not breach the acceptance criteria, it goes on the defect log with a risk acceptance statement. The discipline to stick to this process under pressure is what separates experienced ERP consultants from those who end up firefighting indefinitely.

The Key Stakeholder Is Unavailable

Executives go on holiday. Finance Directors get pulled into board meetings. The person whose signature you need is simply not available when you need it. The way to prevent this is to establish the sign-off authorities and their deputies at the very start of the project. Every named sign-off authority should have a named deputy with equivalent decision-making authority, documented in the project governance plan. If you reach sign-off and you have not done this, you have a problem. Escalate through the steering committee immediately rather than waiting. A week lost to an unavailable stakeholder can cascade into a month-long delay.

Scope Creep During UAT

UAT is a testing phase, not a design phase. Business users who are genuinely engaged with the system for the first time will often surface requirements that were not captured at the start of the project. This is normal and, in some sense, healthy. It means they are actually using the system. The problem is when these new requirements are treated as defects and added to the sign-off blockers list.

The response is clear and consistent: anything raised during UAT that was not in the agreed requirements document is a change request, not a defect. It goes through change control, it gets assessed for impact on the go-live timeline, and it may be deferred to a post-go-live release. This is not a conversation that is easy to have with a client who feels their needs are not being met, but it is a necessary one. The history of ERP implementation failures is full of projects where scope creep during UAT pushed out go-live dates by months, eroded trust on both sides, and consumed contingency budget that was needed elsewhere.

The Business Wants to Sign Off Verbally

This happens more often than you would think, particularly with smaller clients who find the formality of a sign-off document uncomfortable. The answer is firm but diplomatic: verbal agreement is not sign-off. Not because you do not trust the client, but because a formal document protects them as much as it protects you. If something goes wrong after go-live, having a documented sign-off that records what was known and accepted at the time is in everyone's interest. Frame it as governance, not distrust.

6. Go-Live Readiness Checklist

UAT sign-off is a prerequisite for go-live, but it is not the only one. Use this checklist to ensure everything is in place before committing to cutover. Each item should have a named owner and a confirmed status before the go/no-go meeting.

Go-Live Readiness Checklist

UAT Completion

☐All in-scope test cases have been executed
☐Pass rate meets the agreed acceptance threshold
☐All critical defects resolved and retested
☐Outstanding defects logged with severity, workaround, owner, and fix date
☐Risk acceptance statements signed for all known issues
☐UAT sign-off document signed by all named process owners

Data Migration

☐Production data migration plan is finalised and timed
☐Data migration has been validated in UAT with sign-off from Finance
☐Opening balances reconcile to legacy system closing balances
☐Rollback plan is documented and tested

Training

☐All end users have completed role-based training
☐Training completion is documented and evidenced
☐Quick reference guides or SOPs are available at user workstations
☐Super users have been identified and briefed

Infrastructure

☐Production environment is provisioned and tested
☐User access and permission sets are configured for production
☐All integrations tested against production endpoints
☐Backup and disaster recovery procedures are confirmed
☐Performance tested under expected production load
☐IT infrastructure sign-off document completed

Support Plan

☐Hypercare support model is agreed and resourced (who, how long, escalation path)
☐Defect triage process for post-go-live is documented
☐Post-go-live release schedule for known defects is confirmed
☐Service desk or ticketing system is set up and tested
☐Legacy system decommission plan is agreed (or parallel run period confirmed)
☐Go/no-go decision meeting is scheduled with steering committee

7. How LogicHive Helps with the UAT Sign-Off Process

The biggest practical problem with UAT sign-off is visibility. When your test execution data is spread across spreadsheets, your defects are tracked in a shared document that nobody keeps up to date, and your sign-off is a PDF that gets emailed around for wet signatures, the process is fragile. Information falls through the gaps, stakeholders are working from different versions of reality, and the go/no-go decision ends up being made on gut feel rather than evidence.

LogicHive is built specifically for ERP implementation teams who need structured UAT management without the overhead of enterprise testing tools designed for software QA teams. It gives you:

Real-time readiness dashboards: test execution progress, pass rates by process area, and defect status by severity, all in one view. Your steering committee can see the same dashboard as your project team. No manual status reports required
Structured defect management: log, triage, and track defects with severity, business impact, workaround, owner, and fix date. Defects that are accepted at sign-off are clearly distinguished from defects that are blocking it
Sign-off workflows: structured, role-based sign-off that ensures each business process owner reviews and approves only their area. No more chasing signatures across email chains
Audit trail: every test result, every defect status change, every sign-off action is timestamped and attributed to a named user. If the sign-off is ever questioned, the evidence is there
No per-seat fees for client testers: your client's business users can participate in UAT and the sign-off process without you needing to buy them individual licences. From £72.99/month for the whole project team

See the full feature set or review pricing for your team size.

The Sign-Off Principle

UAT sign-off is not the end of the testing process. It is the beginning of the business taking ownership of the system. The best sign-off processes are the ones that are set up correctly at the very start of the project: agreed acceptance criteria, named sign-off authorities, a structured defect classification system, and a clear document template. If you are trying to define all of this at the end of UAT, you have already made the process harder than it needs to be.

Run the sign-off process the same way you run the rest of the project: with structure, evidence, and named accountability. The go-live decision is too important to leave to a conversation in a meeting room.

Frequently Asked Questions

What is UAT sign-off?

UAT sign-off is the formal process by which key business stakeholders confirm that the system under test meets their requirements and they accept it as ready for production use. It is not a rubber stamp. It is a documented, evidence-based decision that the business is prepared to go live and accepts responsibility for the system from that point forward. In ERP implementations, UAT sign-off typically requires named individuals to review test results, outstanding defects, and risk acceptance statements before countersigning a formal sign-off document.

Who signs off UAT?

UAT sign-off should come from business process owners, not the implementation team or the project manager. For an ERP implementation, this typically means the Finance Director for finance processes, the Operations Manager for supply chain, and the relevant department head for other in-scope areas. The IT Director may co-sign from a technical perspective. The steering committee or project sponsor provides the final go/no-go sign-off based on the business area approvals. If the consultants are signing off their own work, it is not genuine UAT sign-off.

What should a UAT sign-off document contain?

A UAT sign-off document should contain: a summary of test execution results (total test cases, pass rate, defects by severity); an outstanding defects log with severity ratings, workarounds, and post-go-live remediation plans; risk acceptance statements for any known issues being carried into production; and sign-off signatures from each named business process owner and the project sponsor. The document should be dated and version-controlled, and it should reference the specific UAT environment, build version, and data migration run that was tested.

What is the difference between UAT sign-off and go-live approval?

UAT sign-off confirms that testing is complete and the system meets business requirements. Go-live approval is the broader decision to proceed with cutover, which also takes into account data migration readiness, infrastructure sign-off, training completion, support arrangements, and cutover plan readiness. UAT sign-off is a prerequisite for go-live approval, but go-live approval requires additional criteria to be met. You can have successful UAT sign-off and still delay go-live if, for example, the data migration has not been validated or the support team is not ready.

How do you handle a client who refuses to sign off UAT?

Start by finding out why. Is it a genuine defect concern, a scope dispute, a political issue, or simply unfamiliarity with the sign-off process? If the concern is defect-related, triage the outstanding items against your agreed acceptance criteria. Clients often raise issues during sign-off that fall outside the original scope or that represent preferences rather than defects. If the client is raising new requirements during sign-off, that is a scope change and should be managed as such. Document everything, get the specific objections in writing, and escalate through the steering committee if necessary. Never allow verbal sign-off or an implied agreement that is not documented.

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