Hello Payal,
There is no straight forward user-exit solution for this BUT it is possible.
User-exit QQMA0014 route:
- In this method you need to write your code in include ZXQQMU20. In this code function module BAPI_ALM_ORDER_MAINTAIN will be used which will be updating the Partner information of the Order.
- Because this exit works at SAVE event of Notification, it identifies the Partner field change and through the above fm updates the Partner information of the linked Order (through table IT_PARTNER in the fm).
Good luck
KJogeswaraRao