Conditional Requirement?

[doostin]

I think this might be a strange one, or a simple one, I have no idea.

Lets say I have two fields:

Payment Amount

and

Payment Type

These fields aren't always used so I can't make either one of them a requirement to fill out. However I would like if they enter a "payment amount" that payment type becomes required. Is there a way to do this? I was thinking a validation calculation? I'm not even sure how to approach this.

Thanks for the help!

Dustin

[doostin]

I should probably say I posted here under Value Lists because the "payment type" field is validated by a value list. If it makes sense to be posted elsewhere please let me know, thanks!

[John Mark Osborne]

This should work:

Case(

IsEmpty(Payment_Amount);

1;

not IsEmpty(Payment_Type);

1

)

Make sure to uncheck the option "validate only if field has been modified".