Unrecognized Guid format.
I'm getting the error Unrecognized Guid format. when trying to insert into the leads entity in CRM2016.
I have narrowed this down to a calculated field which returns customer type. In the instance where I am seeing an error the formula is returning an empty string. The formula is:
IF(S37 = 0 , "",
I think the reason is the empty string rather than returning null. Can anyone advise please?