SAP Message APPLG016 - DC: Only one GP is allowed to change data per distribution cycle

Diagnosis A graphics proxy has tried to change data in the data container. Thechanges were rejected because another graphics proxy has already madechanges. Procedure This probably involves a programming error. Please check the programming. After a graphics proxy has made changesthe data must be distributed using the method DISTRIBUTE_CHANGES beforeanother graphics proxy can make any changes.