ABAP: must-know tips and techniques

QUESTION:

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?

EXPERT RESPONSE:
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.

SOURCE: SAPSearch.com