SAP Message U6057 - Inst. &1 in billing document &2 is different to inst.&3 in this entry

Diagnosis You are processing an entry in the error extract table (INSTSET) forinstallation &V3&. The entry contains the document number &V2&. Thisdocument belongs to installation &V1&, which is not the same asinstallation &V3& in the error extract. The wrong document number wasprobably enterd via 'special entries' Procedure Check whether the entry needs to be processed. To do this, call the BREfor installation &V3&. This updates all entries for installation &V3&in the table.