Assistance Required for Projects Associated with Contracts

Hi Cloud Community,
Good day!

I’m seeking assistance on making the “Associated Project” field mandatory when creating contract lines. Currently, in the contract line section, there is an option to associate projects, but it’s not required—contracts can be created without linking a project. For my project, I need to ensure that every contract line must have an associated project; if not, an error should be displayed.

Could anyone advise on how to enforce this requirement or share best practices for making the “Associated Project” mandatory in contract lines?

Thank you!