If a structure or table is not included in the exporting parameters of a user exit, is there a way to update that structure/table?
Generally not. It means that SAP did not want you to change the data. If there is another user-exit where you get the data as import parameter, you may consider an "EXPORT to MEMORY" or better: creating two function modules like "Z_TABLE_PUT" and "Z_TABLE_GET" that transfer the table into a global variable of the function group.
An SAP user wants to know how to upload data into SAP R/3 when SAP Scripting is not enabled.
An SAP user is receiving an error message while integrating SAP iDoc PORDCR1 for a purchase order.
An SAP user is having difficulty with PERNR iDoc while transporting data from SAP to an external system.