QBO allows duplicate payments

[thelontx]

Unlike invoices, QBO allows duplicate payment transactions to be created. There is a QBO setting for custom invoice document numbers. When set, this prevents duplicate invoices. There is not a similar setting on the Payment transaction side.

For first WAQM Payment release, plan to leave this as-is with strong documentation warnings. This should only occur if WAQM is run multiple times for the same time period. For the QBO "payment reference number", WAQM is using the WA internal payment ID or payment allocation ID as part of the reference number.

Alternate approach to consider:
Add additional operations in the QBO payment creation loop to search for a Payment with the same "Payment reference number" (created by WAQM) and potentially the Payment amount. If a match exists, skip creating the payment.