InfoPath Dev

Since this is a list form and rules are not supported on attachment controls, I don't think you'll be able to use validation rules for this. List form attachments are a little weird - they turn into URLs when the attachment is submitted. You could try hiding the ribbon and then add your own submit button and see if you can find a way to ...

Dear @Hilary-Stoupa, Attaching files should be mandatory when one of the A1 and D4 options is selected in the System Selection section. It should not be mandatory when one of the B2 and C3 options is selected. Another issue is that when the user selects A1 from the System Selection section, module selection should be mandatory in the company info ...

Dear @Hilary-Stoupa, Attaching files should be mandatory when one of the A1 and D4 options is selected in the System Selection section. It should not be mandatory when one of the B2 and C3 options is selected. Could you help me with this?

Good job!

thank you for your support, I was able to add all users and it worked

Yuck, ok, you'll just need to modify your existing rule to handle for all 15, I suppose. Copy the bottom-most expression out and paste it someplace you can easily work with it, like Notepad. Then you can just use "and" to string together the rest of your conditions and paste it back into the bottom-most condition expression area: ...

I copied and pasted the existing rule, but while the rules in Rule 1 work, the copied rule in Rule 2 does not work.

You should be able to just copy and paste your existing rule and modify as needed.

Can you show me with an example how to add the additional formatting rule to the form I shared before?

Can you add a few additional formatting rules for your additional users?