I match selected transactions across both systems and locate where quantities, values, identifiers or posting dates diverge. The result shows whether mapping, timing or reconciliation logic needs to change.
I trace one webhook from payload and acknowledgement through queues, jobs and downstream writes. A successful response only counts when the required target state can also be verified.
Timestamps, correlation IDs and duplicate-handling rules reveal whether scheduling, idempotency or sequence is the real problem. Representative failure cases become repeatable tests for the fix.
I define the authoritative source for each important field and status, then trace the reporting transformation. Disagreements can then be resolved through explicit rules instead of manual debate.
Corrected records often reveal the missing control. I turn repeated workarounds into a defined validation, retry or exception process with evidence that it closes the original gap.
I map who detects, triages, corrects and closes each exception across IT, partners and operations. Clear decision rights prevent errors from disappearing between team or contract boundaries.