I tried this, but I get an error message.
TEXT( Opportunity__r.CPC__c )
Error msg:
CPC is a multi-select picklist field. Multi-select picklist fields are only supported in certain functions.
266 answers
Thanks @JackieT
you could try something like this:IF(INCLUDES( Multi_Picklist_1__c , "A"), "A", NULL) + BR() +
IF(INCLUDES( Multi_Picklist_1__c , "B"), "B", NULL) + BR() +
IF(INCLUDES( Multi_Picklist_1__c , "C"), "C", NULL)