Cannot Create Master-Detail Relationship
You cannot create a new Master-Detail relationship on an existing custom object if records already exist. You must first create a Lookup relationship, populate the lookup field with data in all records, and then change the relationship type to Master-Detail.
The part of the error message that's confusing is, what records would already exist?:
"You cannot create a new Master-Detail relationship on an existing custom object if records already exist"
The only thing I can see is that there is already a Master-Detail relationship between Property and Favorite I created earlier in the unit, would I need to delete that before another Master-Detail relationship can be established?
Any help would be appreciated thanks
답변 2개
Hi Kymes,
Do you already have any records on that object? If so, then you cannot add a master-detail relationship. You will need to either delete all records, or create the relationship as a lookup, populate it for all records, and then convert it to a Master-Detail.
Master-detail relations are required, and by creating such a field while records exist they will not have a value.
