agent flagged every check over 10000 as a duplicate after the check stock numbering restarted at the printer change

TL;DR

Fix the agent's duplicate check to include the check stock series or date as well as number, and release the legitimate checks over 10000 it flagged, because a numbering restart at a printer change makes numbers repeat legitimately. Prove it on one affected account before rolling it to the rest of items in the reconciliation run, because this fault repeats identically wherever the same condition holds and a fleet-wide or batch-wide first attempt multiplies the damage when the diagnosis is wrong.

agent flagged every check over 10000 as a duplicate after the check stock numbering restarted at the printer change

Use this when

• You see this exact error or symptom: agent flagged every check over 10000 as a duplicate after the check stock numbering restarted at the printer change.
• The failure is in the reconciliation agent and the accounting system it works in, and it repeats on the same action rather than happening once and clearing.
• Other items on the same path are working, so the path itself is up and this specific condition is the blocker.

Not for this skill when

• A different error code, message, or tool is involved. Work that error's own skill, because the fix here targets this specific condition.
• The whole service or platform is down. Restore the service first; this skill fixes the named condition, not an outage.
• You cannot identify one affected item to test on. Find one first, because an untested fix rolled out broadly is how this fault gets worse.

Steps

1. Confirm the fault on one affected account first and capture the evidence before changing anything: check the agent's run log and match report for the period, plus the underlying ledger or bank record for one affected item, and record the exact error text, the record or host involved, and the time it happened. Verify: you can point to the exact error and the exact item it belongs to, not just the symptom
2. Fix the agent's duplicate check to include the check stock series or date as well as number, and release the legitimate checks over 10000 it flagged, because a numbering restart at a printer change makes numbers repeat legitimately. Verify: the specific fault named in the title no longer occurs on that item when you repeat the action that produced it
3. Make the operation idempotent: look the record up by its stable key before creating, adopt or update the existing record when it is the same entity, and log which path was taken. Verify: the guard or check is in place and is visible in the run, log, or configuration you changed
4. Retest end to end: rerun the agent on the single account or period that failed and confirm its report ties to the ledger and the bank statement. Verify: the retest completes without the original error and the resulting state matches what a manual check shows
5. Roll the fix out to the rest of items in the reconciliation run in the same way, watching the first few for the same error, and note the root cause and the change in the run or incident record. Verify: the remaining items complete without the error recurring, or the ones that still fail are listed individually with their own evidence

Variant phrasings

agent flagged every check over 10000 as a duplicate after fix

The verbatim error or code phrasing for this fault in the reconciliation agent; the fix is the same one in the steps above.

agent flagged every check over 10000 as a duplicate after the check

The full symptom phrasing as it appears in the console, log, or report where this failure surfaces.

how to fix agent flagged every check over 10000 as a duplicate after

The how-to phrasing for the same fault; start with the TL;DR fix, then work the steps in order.

Compatibility: Reconciliation agents working against SAP, NetSuite, QuickBooks, Xero, Sage Intacct and processor feeds such as Stripe, as named in the title.

Why it happens

This fault happens because create-style operations are not idempotent in most of these systems, so a retry or a pre-existing record surfaces as a hard conflict instead of a no-op. In this case the condition is the one named in the title, in the reconciliation agent and the accounting system it works in: the receiving or acting side reports the failure faithfully, but the underlying state (a record, a setting, a credential, a file, or a mapping) does not match what that action assumes. Fixing the state, as in step 2, clears it; retrying the action without changing the state returns the same error every time, which is why this failure looks stubborn until the state itself is corrected.

Provenance

Resolved from the public thread: https://vectle.com/posts/pst_tGsBd8OOuikutLFwlQDFaQ