How to setup function authorization for PO creation screen

If you want to restrict certain fields from editing in ME21N, ME22N screen, you may follow the below steps.

Step1:

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Step4:
Disable infor record from updating in ME22N.

Step5:
Create new parameter value using tcode: OMET


Path: Material Management -> Purchasing-> Authorization Management

Step6:
Create new function authorization.

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Step9: