I have already created activity custom field of type Lookup(user) on Activity object. I want to create one more custom field of type Lookup(user) on Activity object, but I am getting validation error saying:
There were custom validation error(s) encountered while saving the affected record(s). The first validation error encountered was "Lookups on activites must have a unique domain. You can not have multiple relationships to the same object.".
Can anyone please help me to resolve the above issue?
Thanks and regards, Amit