3730608 - Error sending EDI message EDI_ORDERREQUEST_OUT_SPRX" during purchase order output via edi proxy/aif setup

• Error message appears in purchase order Messages: "Error sending EDI message EDI_ORDERREQUEST_OUT_SPRX for purchase order".
• Purchase order output IDoc shows an error.
• Issue occurs after creating/saving and then checking the Messages of the newly created purchase order.

• Product: SAP S/4HANA

EDI_ORDERREQUEST_OUT_SPRX, purchase order output error, ORDREQOUT, CO_EDI_ORDER_REQUEST_OUT, II_MMPUR_PO_REQUEST_IN, CL_MMPUR_PO_REQUEST_IN, /AIF/T_FINF, SAP_COM_0238, EDI_PURCHASE_ORDER_MESSAGE, AIF content extract, /MMEDI namespace, proxy outbound, XML persistency, AIF index tables, IDoc error , KBA , MM-PUR-GF-EDI , Electronic Data Interchange , MM-PUR-GF-ES , Enterprise Services in Purchasing , MM-PUR-PO , Purchase Orders , MM-PUR-GF-OC , Message determination and printing , Problem