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Why two different messages 00055 00278 for obligatory parameter in ABAP selection screen

calendar_today September 8, 2026 person Sandra_Rossi domain sap-bi-tools

Case 1) With type STRING: REPORT zdemo. PARAMETERS p_param TYPE string OBLIGATORY. I don’t fill the parameter and press Enter, I get the error message 00055 Fill out all required entry fields.

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