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SAP Knowledge Base Article - PreviewSymptom
When trying to make "incompatible change" (such as changing class attributes, deleting methods, even deleting the whole class) in SE24,
error message OO401 "You cannot perform this action in modification/enhancement mode" occurs.
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Environment
NetWeaver ABAP based systems
Keywords
OO401, You cannot perform this action in modification/enhancement mode, SE24, incompatible change , KBA , BC-DWB-TOO-CLA , Class Builder , BC-DWB-CEX , Customer Extensions , How To
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