Update a CODE FOR ORDERING REASON in PO

Question

Hi all,
I need to do a mass update of the purchase orders with the non compliant code u201Cu201D1u201Du201D on the retail tab in the reason for ordering field.
They should be providing a single template with the following 3 fields:
PO NUMBER                      
PO ITEM NUMBER                 
CODE FOR ORDERING REASON    
I have tried to do it using tx code MEMASSPO but I could not find the field BSGRU  (reason for ord.)  
any idea how can I do this mass update?

Answer 1

Hi Lupa,
Basically, Only those fields can be changed in MEMASSPO, that are changeable when manually executing transaction ME22, because   the same checks are performed and the same programs are used, since it's technically spoken a batch-input procedure.     
The field you refere is present in function module  ME_LIMIT_FIELDS_PO,  thisfunction module basically contains all  
non-changeable fields for the mass change of the purchase order.
Regards,
Mauro