Central Block field (BUT000-XBLCK) blocks Business Partner centrally so that other applications cannot modify Business Partner Data. Central Block flag is not used to avoid the use of the business partner, but to avoid certain activities. This depends on the other applications logic that is using the BP, not the BP itself. The field BUT000-XBLCK only becomes relevant when another application is involved.
E.g.: any business transaction like a sales order. If the controlling application of sales order creation has a check implemented e.g. for the central block field, then they might throw an error that BP cannot be used in the sales order due to the fact it is centrally blocked.
If the Central lock field(XBLCK) is set, the Central Posting Block (LFA1-SPERR) and the Central Purchasing block (LFA1-SPERM) of the corresponding vendor would NOT be set automatically. This was delivered with the SAP Note 1666895.
If you want to block a vendor in PO and/or FI documentation, you need to use directly the field Central Posting Block (LFA1-SPERR) and/or the field Central Purchasing block (LFA1-SPERM).
central block, BUT000-XBLCK, LFA1-SPERM, LFA1-SPERR, BP, customer, vendor, update, updated, automatically, purpose, activities, effect , KBA , LO-MD-BP , Business Partners , Problem
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