Service Entry Sheet (SES) fails to be sent to Enterprise Resource Planning (ERP) system and ends up in the status - Failed in External System - with the below error:

User XXXX already processing Purchase order XXXXXX

If your site uses SAP Ariba SAP Integration Suite, managed gateway for spend management and SAP Business Network, you can edit and resend the SES if the requester has edit access and the below features are enabled:

• SINV-6097 (Resending failed service sheets to ERP-integrated systems)
• SINV-5399 (Edit and resubmit action for service sheets failed in external systems)

This error usually occurs when multiple SES with the same purchase order are sent for processing. The ERP program returns this error because of document lock.

Purchasing
Purchasing > Services Procurement > Service Entry Sheet