Restricting changes to G/L account in PO

Scenario:

We had a requirement of restricting the end user to change the G/L account number in PO. The proposed G/L account number should only be considered. 

Solution:

To achieve the above requirement, do the following customization settings: 

Go to transaction SPRO à MM à Purchasing à Account assignment à Maintain account assignment category. 

Following screen appears:

Now select the corresponding Account Assignment category. In our case, it is ‘F’. Double-click on this category. 

Now do the page down on the Fields to find out G/L account.

Now Change the G/L account to Display and click on Save. 

Now when you create/change the PO for the account category F, the G/L account would be shown in display mode as shown below: