2840359 - Error(s) occurred when saving the document to KPRO / Message no.1R509 Content category SOMU is unknown

*** IMPORTANT ***
This document is only valid for OnPremise based systems.
Cloud based are excluded from this KBA resolution.

The output failed with error:

• Error(s) occurred when saving the document to KPRO.
• A technical error occurred when saving the output document to DMS.
• Error when trying to access KPro file storage (No files for physical object)

An additional error is written to the application log (SLG1):

Message Text
Content category SOMU is unknown

Technical Data
Message type__________ I (Information)
Message class_________ 1R (SAP Knowledge Provider)
Message number________ 509
Message variable 1____ SOMU
Message variable 2____
Message variable 3____
Message variable 4____

SAP S/4HANA

1R509, SMOU, SOMU_DB, SFORM_A_STORAGE, Error(s) occurred when saving the document to KPRO , KBA , BC-SRV-KPR , Knowledge Provider , Problem