Once I try to do a preview of the email the next error appears:
The Data Extension name for a LookupRows function call is invalid. A Data Extension of this name does not exist. Data Extension Name:
Registered_Fam_Members Function Call: LookupRows("Registered_Fam_Members","PersonContactId",_subscriberkey)
Parameter Name: DataExtensionName Parameter Ordinal: 1
That Data Extension exists an the AMPScript code I am using is %%=LookupRows("Registered_Fam_Members","PersonContactId",_subscriberkey)=%%
The Data Extension that is being used as sendable is a Standard one.
Do you know what this issue could be related with?
I've added the ENT. prefix in the DE name and now it works.