Prevent release of planned buy orders from Supply Plan if Supplier & site are not populated

Summary:

Prevent release of planned buy orders from Supply Plan if Supplier & site are not populated.

Content (required):

We have a requirement to prevent release of planned buy orders from Supply Plan if it does not have supplier and site populated. How this can be achieved?

This happened since we did not have Buy from Sourcing rules defined for such cases.

Version (include the version you are using, if applicable):

22C

Code Snippet (add any code snippets that support your topic, if applicable):

NA