2464775 - Error ME 006: Ariba invoice fails due to purchase order already being processed by user

You have a multi-line purchase order and the vendor sends an individual invoice for each line all at once from Ariba. When processing the incoming invoices (message InvoiceDetailRequest) in ERP via Ariba Network for SAP Business Suite add-on, the cXML fails with error ME 006 "User XXXXX already processing Purchase Order XXXXX" in SLG1. As a result you have to restart each invoice manually.

Ariba Network Integration for SAP Business Suite (already out of maintenance, more info in SAP Note 2705047)

ME 006, ME006, lock, invoice, invoicedetailrequest, ariba, add-on, adaptor, forward error handling, feh, srt_util_restart, ARBFND_FETCH_CXML_MESSAGES_NEW, po, purchase order, multi, reprocess, ARBERP, BSAO , KBA , BNS-ARI-SE-ERP , Business Suite Ariba integration add-on for SAP ERP , BNS-ARI-SE-ERP-BUY , Business Suite Ariba integration add-on (ERP) - Buy side , How To