607: Multiple alternate identifiers found for orderable item
This error will occur when an order code is mapped to the same Requested Performing Location (RPL) more than once. This error will occur even if the second order code is made inactive. The relationship to the RPL is no longer visible in the application. The duplicate code must be found via sql and updated to be unique from the true order code.
In the screenshot above, the orderitem_identifier was queried with the entryname of the order code. When two entries were found with the same entrycode and RPL, the entrycode and entrymnemonic were altered by prefixing the two values with "ZZ".