Message type: E = Error
Message class:  /SAPAPO/PDEM -  
Message number: 879
Message text: End of STO Demand data Excel File Upload
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The SAP error message /SAPAPO/PDEM879 typically occurs during the upload of Stock Transport Order (STO) demand data via an Excel file in the SAP Advanced Planning and Optimization (APO) module. This error indicates that there is an issue with the data being uploaded, which prevents the successful processing of the demand data. Causes of the Error Data Format Issues: The Excel file may contain data that is not in the expected format. This could include incorrect data types, missing required fields, or invalid values. Missing or Incorrect Mapping: The fields in the Excel file may not be correctly mapped to the corresponding fields in the SAP system. Validation Errors: The data being uploaded may fail validation checks in SAP. This could be due to constraints such as incorrect material numbers, plant codes, or other key fields. File Size Limitations: The size of the Excel file may exceed the limits set by the SAP system. Authorization Issues:
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