Message type: E = Error
Message class:  CNV_CMIS_A_20 - Message class for Cross-Client Customizing Comparison (SLO) 
Message number: 277
Message text: User does not have dialog access. Piecelist will not be created
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The SAP error message CNV_CMIS_A_20277 indicates that a user does not have the necessary dialog access to perform a specific action, in this case, the creation of a piecelist. This error typically arises in the context of data migration or conversion processes, particularly when using SAP's Conversion Management Information System (CMIS).
Cause: The primary cause of this error is that the user attempting to execute the action does not have the required authorizations or roles assigned to their user profile. This can happen due to: Missing Authorizations: The user lacks the necessary permissions to access the dialog transaction or function module required for creating a piecelist. Role Configuration: The user's assigned roles may not include the necessary transactions or authorizations related to the CMIS or the specific data migration process. User Profile Issues: The user profile may not be correctly set up to allow access to the required functionalities.
Solution: To resolve this error, you can take
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