Field Fixed and Related Field Fixed relations in D365FO
In D365FO, there are two relation types called Field Fixed and Related Field Fixed that many developers find confusing. It isn't always clear when to use each one or what is the difference between them. As a result, developers might end up writing X++ code to override the lookup and achieve certain behavior, even though these relation types can handle many of these scenarios without any custom code. So in this article, I'll show you the difference between Field Fixed and Related Field Fixed using two simple examples. Field Fixed Let's assume we want to create a table that stores the party type (Example: Customer or Vendor) and the corresponding account number PartyType PartyReference ---------------------------------------- Customer C001 Vendor V001 As you can see, the PartyReference field can store either a c...