Hello Ajay,
This happens because of authorization object K_ORDER being activated for t-code IW22.
Can you do following:
1. 1. Call t-code SU24. In the field ‘Transaction code’ type in IW22 and execute it.
Check whether authorization object K_ORDER is active. I believe it is!
2. 2. Do the same for t-code IW32 and check whether authorization object K_ORDER is activated or not…
In this case it should not be.
To sum it up:
Per my understanding you are able to release maintenance order via IW32 because authorization object K_ORDER is deactivated.
And not able to release maintenance order via IW22 because authorization object K_ORDER is active.
Please check it on your side and let me know how it looks like?
Regards,
Grzegorz