Lookup function problem

[sp20231]

Is there a possible explanation, on why every time I put in a lookup function into the app formula, it would automatically remove it from appearing on the forms? If I remove the formula, then that row would show up in the form. 

What did I do wrong?

[AleksiAlkio · Accepted solution]

It sounds your LOOKUP() formula doesn't find any value to write and then it hides It.

[sp20231]

As frustrating it was, yes that was the problem. I made an error in my table linking.

Thank you.

[AleksiAlkio]

You're welcome!