Message type: E = Error
Message class:  HRPSGB_HER - HR PS GB Higher Education Messages (USS, HESA etc) 
Message number: 305
Message text: If Academic Teaching Qualification 90 or 99 no morre entries allowed
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The SAP error message HRPSGB_HER305, which states "If Academic Teaching Qualification 90 or 99 no more entries allowed," typically occurs in the context of managing academic qualifications within the SAP Human Resources (HR) module, particularly in the area of personnel administration or employee qualifications.
Cause: This error message is triggered when there is an attempt to enter more than one record for the Academic Teaching Qualification codes 90 (Teaching Qualification) or 99 (Other Teaching Qualification). In SAP, these specific qualification types are designed to allow only a single entry per employee. The system enforces this rule to maintain data integrity and ensure that each employee's qualifications are accurately represented without duplication.
Solution: To resolve this error, you should follow these steps: Check Existing Entries: Review the existing qualifications for the employee in question. You can do this by navigating to the relevant infotype (usually Infotype 0024 for Academic Qualifications) and checking if there is already
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