Message SAP /SAPSLL/PLUGINR3841 - Material &1 requires additional identification

Diagnosis
You must assign an ID for identification verification (additional stockseparation) for material &V1& in SAP GTS.

System Response
You cannot post the document.

Procedure
To assign in ID for identification verification, implement BusinessAdd-In (BAdI) /SAPSLL/CUS_IMID_DET.