Hi

I am using a formula-

if( checkbox__c =true, DateTime__c- CreatedDate , now()-CreatedDate )

When I click ''Check Syntax' button then there is no error andCompiled sise is 207 characters, but when I tried to save it, this is showing error "Formula(s) that reference this field are no longer valid: Compiled formula is too big to execute (16.122 characters). Maximum size is 5.000 characters".

This is very basic and small formula, I wonder why this is showing error.