https://userapps.support.sap.com/sap/support/knowledge/en/3665308
3665308 - Error FCO_AVC_CC006 happens when performing mass maintenance for cost center | SAP...
When using t-code KS01N or KS12N for mass maintenance of cost centers, error message FCO_AVC_CC006 'AA: Company codes differ for cost ctr BB and...