Validation after Excel File Upload in Table Maintenance
I've done extensive research on this topic and still have yet to find the answer. I have created a custom button in the TMG to upload an Excel file to the table maintenance using the FM CL_GUI_FRONTEND_SERVICES=>GUI_UPLOAD. I updated the EXTRACT and TOTAL table so it will show up in the TMG interface, but no validations occur. So, I am now trying to do the validations of this file upload. I would like to validate each record and allow the user to modify the error record then continue validating the rest. Essentially I would like to mimic the functionality that occurs when multiple records are copied to the table maintenance and validated one by one. Updating the EXTRACT table through ABAP, does not reach the PAI where the validations occur.
Is this approach possible? If not, what would be the best way to do validations, inform the user of the error record, and allow modification in the table maintenance interface?