R12 Purchasing: Approval of PO with AME ends in ORA-00060 error

If you are on R12.1.3 or R12.2 make sure that you bone up on MOS article "When approving a Purchase Order using AME, the Approval Workflow completes with ORA-00060 and "ECX_PROGRAM_EXIT_EMBD" errors" from note ID 1585839.1 as a certain Transmission Method can cause an ORA-00060 error to happen in the AME Workflow.