SAP Note 413207 - ME21N: Error message from partner determination is lost

Component : Partner -

Solution : https://service.sap.com/sap/support/notes/413207 (SAP Service marketplace login required)

Key words :
system generates error message me329, additional key words me22n, error message disappears, system outputs error 06218, solution implement note 386262, function module mepo_doc_form_process, program error, purchase order, transaction me21n, master record

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300805ME21N: Problems with partner determination