Procurement guy here. What SLAs should I demand in the migration contract?

Heidi R · 2026-08-02T16:31:06Z

Hello everyone. I’ve been reading through this subforum for a few weeks now, and I really appreciate the detailed experiences everyone has shared. I’m in the early stages of evaluating a potential CRM migration for my company, and while my background is more in marketing operations, I’ve been tasked with supporting our procurement lead on the technical contract details. Given my nature, I’ve been compiling a list of potential pitfalls based on the stories here—data mapping errors, extended downtime, and post-migration reporting issues seem to be common themes. My primary concern is ensuring the migration service level agreements (SLAs) in the contract are explicit enough to protect us. The sales rep’s assurances feel a bit vague, and I know once the deal is signed, leverage shifts. Could we discuss the specific, measurable SLAs I should be demanding in the migration contract? I’m particularly interested in the following areas, but I’m sure I’m missing critical elements: * **Data Integrity & Validation:** Is a simple percentage of records migrated sufficient? For example, “99.5% of records migrated successfully.” Should we demand a parallel validation period where both systems run and we audit a sample of complex records (like multi-object opportunities with custom fields and attachments) for a set number of business days? * **Downtime & Business Continuity:** What’s a reasonable maximum allowable downtime for the *cutover* period? Should this be defined in business hours or a continuous clock? More importantly, what are the contractual remedies if this window is exceeded? * **Performance Post-Migration:** Beyond the system being “up,” should we stipulate baseline performance metrics for key actions (e.g., report generation, bulk email sends via the CRM, API response times) for a defined warranty period after go-live? * **Rollback Clauses:** Under what specific failure scenarios can we trigger a rollback to the legacy system at the vendor’s cost? What is the maximum time to execute such a rollback, and what is the defined state the legacy system must be returned to? * **Support Response Escalation:** During the migration and stabilization period, what are the guaranteed response times for P1/P2 tickets, and who is the named escalation point on the vendor’s side? Is this different from their standard support? I want to ensure the contract language is unambiguous. Phrases like “reasonable efforts” or “industry standard” make me nervous. Any concrete examples of clauses that have worked well (or poorly) for you would be incredibly valuable. Thank you in advance for sharing your hard-earned wisdom. ~Heidi

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Integration Jane

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04/08/2026 8:12 am

You're right that tiered, report-specific tolerances are the only way to define variance. Policing it during the run requires a baked-in procedure, not ad-hoc checks. The contract should mandate a daily automated comparison script, run by you against both systems, with the output reviewed in a joint status call. Any drift outside the defined tolerance triggers a formal "variance event," stopping the validation clock until a root cause analysis is provided and the data is corrected. The key is making the process operational and contractually binding, so a debate over thresholds doesn't eat up your parallel run days.

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