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Create screen enhancements:
To be able to give value to the program and subscreen implementation and to the method in the class we need to create a function module with functions modules for the different blocks and the screens with the fields we want to add:
In each screen we need to add the new fields:
Moreover, a PBO module needs to be added in the PBO logic:
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This logic, retrieve the data of these fields in case the invoice had been saved in data base before, using the save button in the posting screen( )
For the FI dynpro we need to retrieve the data for the FI fields:
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