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In the history (in pic below) of my custom object which has a reference to another custom object how can i access old and new values for the field which references another object.

Event__c is a reference to another custom object(has a master detail relationship) , but there are no new/old values in the history table- the value in New Value is just a reference to the parent ID.(Category__c is a drop down - cant see the values for this too).

How do i retrieve the values of OldValue and NewValue for this?

enter image description here

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  • I've tested this using a custom object in my org, and I cannot replicate the problem. When I change the value of a relationship field, the name of the new and old values are recorded correctly. What are you doing to the Events__c field?
    – fred
    Nov 11 '15 at 16:01
  • if this (Event__c) is a master-detail that doesn't allow reparenting, then there will never be an oldvalue for the relationship field as you can only create the relationship, never update it
    – cropredy
    Nov 11 '15 at 17:50
  • Based on the sceenshot looks like the old value for Category__c was empty (or null). But would you mind answering what is the field type and size of this field?
    – Jeferson Chaves
    Mar 7 at 20:30
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You can fire a query on history object. If is test__c object then name will be testHistory.

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  • this table is from the result of the query and that unfortunately is not my question
    – goSF
    Nov 11 '15 at 15:01

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