Symptom
When pushing a check to QuickBooks Online, you may see an error like:
TxnID Cannot Be Linked : [reference number]
The following objects were created in the GL: Credit Memo - Link
Cause
This happens when the customer receiving payment is set up as a sub-customer in QBO, but the parent-child relationship isn't fully configured. Specifically, the "Bill Parent Customer" checkbox is unchecked, or the Parent customer field is missing or incorrect. Without this, QBO can't link the transaction to the parent-level invoice Confido is reconciling against, so QBO creates a standalone Credit Memo instead of linking it to the original transaction.
Fix
In QBO, open the sub-customer record for the account (e.g., a distributor location or broker sub-account).
Confirm "Is a sub-customer" is checked.
Confirm the Parent customer field points to the correct parent account.
Confirm "Bill parent customer" is checked.
Save, then re-push the check in Confido.
For the full setup walkthrough, see Creating Parent x Child Relationships in QBO.