How to trigger mail on release of PO
In Purchase Orders, when we release it (Click the icon for release options), using TCode ME29N, a mail is triggered to the contract manager, based on the mapping between the Process Owner and the contract manager.
My question is:
1) Is the mail being triggered by configuration? If yes where is the configuration done?
2) Is the mail being triggered by some custom development? If yes then where is the logic written (In some user exit or BADI)?
We are using SAP 4.7.
Any help would be appreciated.
Thanks in advance.