Hi Vignesh,As per SAP Note 2340925 MMSC is Deprecated and later whitelisted again as part of SAP Note 2518816.Implement the solution Note 2249880 to re-enable the blacklisted transaction exclusively "MMSC" from S/4 HANA 1610 FPS02, 1610 FPS03, 1709 a...
In Purchase Order, Item Tab "Delivery", select the Blocked Stock option instead of Unrestricted use.This will automatically post the GR to Blocked Stock.