Restrict submission without budget

Summary:

How to restrict employee while submitting worksheet if not budget .

Content (required):

We have defined grade wise % in UDT. However, when sheet populated allocation is done automatically but budget is 0. However, when manager try to submit it's allowed, how can stop manager can submit until having sufficient budget.

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

22B

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