Fernando,
Veja nota: 1902578 - FAQ: Postreading master data
4. Question: Is there a mass processing for the function for postreading master data?
Answer: No, it is impossible to postread large quantities of master data in the standard SAP system. However, you can use BAPI_PRODORD_CHANGE or BAPI_PROCORD_CHANGE to postread the master data for many orders easily (use the parameter EXPLODE_NEW).
Nos fizemos um Z, que funciona perfeitamente....
abs
Dimas Faria