ALTER TABLE DROP COLUMN failed because one or more objects access this column

Question

I am trying to do this:

ALTER TABLE CompanyTransactions DROP COLUMN Created

But I get this:

Msg 5074, Level 16, Stat

Answer 1

When you alter column datatype you need to change constraint key for every database

  alter table CompanyTransactions drop constraint [df__CompanyTr__Creat__0cdae408];