Message type: E = Error
Message class:  PPEAPO_ECN - Message Class for BAdI Class CL_PPEAPO_ECN 
Message number: 002
Message text: An error has occurred when swapping from change number &1 to &2
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The SAP error message PPEAPO_ECN002 indicates that there was an issue when attempting to swap from one change number to another in the context of Engineering Change Management (ECM) within the Advanced Planning and Optimization (APO) module. This error typically arises during processes that involve managing changes to products, such as when trying to switch from one version of a product to another.
Cause: The error can be caused by several factors, including: Inconsistent Data: The change numbers involved may not be properly configured or may have inconsistencies in their associated data. Dependencies: There may be dependencies or relationships between the change numbers that are not being respected during the swap. Authorization Issues: The user may not have the necessary authorizations to perform the swap operation. System Configuration: There may be issues with the configuration of the APO system or the specific settings related to change management. Locked Objects: The objects related to the change numbers may
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