The map error message refers to the PR ID number within Dynamics 365.
Invoices that receive the 'map error' means that there is something wrong with the PR.
The ID in the error message on the audit trail log points to the PR ID number. It is happening because something was changed on the PR the same time it was being added to the invoice (Dynamics 365 side). Dooap first gets the PO and matches it, and in between matching and transferring something happens to the PR ID causing the map error. If anything changes on the PR between the time it was first put on to when it is transferred that will cause the mapping error message.
Dooap does not auto-refresh the PO + PR once it is on the invoice. When the error message happens, return the invoice from the batch, remove the PO + PR, and re-match. Also before transferring, using fetch lines will also allow the invoice to have the most up-to-date information.
