Message type: E = Error
Message class:  HRGB_GBSXP - Message for GBSXP 
Message number: 667
Message text: IT0088 Error; Subtype &1 should not include field &2 (T588M)
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The SAP error message HRGB_GBSXP667 related to IT0088 indicates that there is a configuration issue with the subtype of the infotype. Specifically, the error message states that a certain subtype should not include a specific field, as defined in the T588M table.
Cause: Configuration Issue: The error typically arises when the configuration of the infotype (IT0088) does not align with the defined rules in the T588M table. This can happen if: The subtype is incorrectly configured to include fields that are not allowed. There is a mismatch between the subtype and the fields defined for it in the system. Custom Development: If there have been custom developments or modifications made to the infotype or its subtypes, this could lead to inconsistencies. Data Entry Error: Sometimes, the error can occur due to incorrect data entry where a user tries to enter data that is not permitted for the selected subtype.
Solution: Check Configuration: Go to the configuration settings for infotype
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