Error 000359 Invalid Field - why?

Question

I am using ARCGIS Pro and have created a file geodatabase.   I am able to add the fields and domains I want, BUT there are a few fields that are NOT being added to the table.  The error on these fields is 000359 and says it's an "invalid field".   I am wondering if anyone else has experienced this, and if so, is there some way I can determine "why" the particular fields I am trying to add are invalid while others are good.

Thanks for any help!

JoabelBarbieri · Answer

Same here...Bizarre indeed

tiztrain · Answer

Yeah I have come across this and it shouldn't be a problem with how I have named a field:

Just deleted the field and re-entered it and it worked fine. Bizarre.

Pro 3.1.3

bixb0012 · Answer

Can you share some more about the fields you are trying to add?  What field names have issues?  What data types for those fields, etc....