A post-migration checklist for phone-number validation, billing cleanup, website phone links and dynamic number insertion.
Validate every migrated number
Confirm the numbers exist in the destination account and route correctly.
Do not cancel too early
Keep the previous provider active until migration and call flow are validated.
Review website phone touchpoints
Header, footer, sticky buttons, tel links and schema may all reference old numbers.
Replace DNI deliberately
Dynamic number insertion should be moved only after the new Number Pool logic is ready.
Final thought
The useful approach is to isolate the technical layer responsible for the problem, change one thing at a time and validate the real user flow.
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