Hi, I believe you were having some parental relationships or cascading relationship between the two entities. The below blog posts will help you to find it out… https://d365demystified.com/2019/07/19/solving-the-record-could-not-be-deleted-because-of-an-association-error-in-d365-ce/ https://spandcrm.com/2018/04/16/dynamics-365-the-record-could-not-be-deleted-because-of-an-association/ Hope it helps….