| DiagnosisYou want to change the CO version although construction progressreports already exist for this CO version.
 Procedure
 If the message is an error message you cannot change the CO version.
 If the message is an information or warning message you can change theCO version.Procedure for System AdministrationYou can control this message in Customizing for ConstructionProgress Report and Valuation
 > under Change Message Control>.
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