Message type: E = Error
Message class:  /SAPAPO/SALES -  
Message number: 123
Message text: You do not have authorization for this selection
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The SAP error message /SAPAPO/SALES123 indicating "You do not have authorization for this selection" typically arises in the context of SAP Advanced Planning and Optimization (APO) when a user attempts to access a transaction or report for which they do not have the necessary authorizations.
Cause: Missing Authorization Object: The user may not have the required authorization object assigned to their user profile. This could be due to missing roles or authorizations related to the APO module. Role Assignment: The user might not be assigned to the correct roles that include the necessary permissions for the specific transaction or report. Profile Issues: There could be issues with the user profile or the way authorizations are set up in the system. Transaction Restrictions: Certain transactions may have restrictions based on organizational levels, such as plant or company code, which the user may not have access to.
Solution: Check User Authorizations: Use transaction SU53 immediately after encountering the error to
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