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risha how to create composite key?i have 3 objects such as A,B,C in that A&B consists a field a,b those are not unique key.but i need to create a map by a,b to create a unique key.pls help me
Hi Risha,
You may create a new field called composite field (or any name) and use a Formula field to concatinate the value in Field A Object A and Field B in Object B.
Cross Object Formula fields work only on Related Objects - if the Objects are not related then you may go for a APEX Class and a Trigger which can do the Job.
Regards,
Ashish