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MR_READ_PRELIMINARY_HISTORY - NOTRANSL: Lesen Bestellentwicklung - Vorerfaßte Rechnungsbelege
MR_READ_PRELIMINRY_HISTORY_DAO - Read preliminary PO History; calculate sums
MR_REVERSE_DOCUMENT_UPDATE - NOTRANSL: Rechnungsbeleg stornieren: Referenzbeleg ändern
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