1. With Transaction MB1A 'Enter Goods Issue', you post a receipt to a project stock or sales order stock with reference to a reservation. For this, you use, for example, movement type 222 Q. Although the project and the material are managed with valuation and thus the project stock should be valuated, the system creates the stock without valuation.
2. You cancel a stock transfer for a project stock or sales order stock using Transaction MBST. For the automatically generated line, the system generates message M7242 although no inconsistency exists.
The symptom only occurs if Transaction MBST or MB1A is used, however, it does not occur in Transaction MIGO or when you use BAPI BAPI_GOODSMVT_CREATE. Other terms
SAPMM07M, PROJEKT_PRUEFEN, PROJEKTPRUFUNG, KZBWS, MSSQ, WBS element, project, SOBKZ Q, SOBKZQ, MAT_PSPNR, PSPNR, PRPS, sales order, VBAP, SOBKZ E, SOBKZE, MSSA Reason and Prerequisites
M7 242, M7242, DM07M-UMKZBWS, stock transfer, transfer posting, cancellation, MBST, MB1A, reservation, MvT 221 Q, 221Q
The problem is caused by a program error. Solution
https://service.sap.com/sap/support/notes/677273 (SAP Service marketplace login required)