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  • Catriona Allcock
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6 replies

Error: Apex trigger npsp.TDTM_Contact caused an unexpected exception

I am having issues with a managed Apex trigger from the NPSP.  This is the error I get anytime I try to update a contact: 

Error: Invalid Data. Review all error messages below to correct your data. Apex trigger npsp.TDTM_Contact caused an unexpected exception, contact your administrator: npsp.TDTM_Contact: System.LimitException: Query of LOB fields caused heap usage to exceed limit.

I am the system admin, but I am newer to Salesforce and have no background in development.  If someone could help me out with this error I would really appreciate it. I am not sure what happened to cause this. I have not changed any setup for weeks. 
6 replies

Error: Apex trigger npsp.TDTM_Contact caused an unexpected exception

I am having issues with a managed Apex trigger from the NPSP.  This is the error I get anytime I try to update a contact: 

Error: Invalid Data. Review all error messages below to correct your data. Apex trigger npsp.TDTM_Contact caused an unexpected exception, contact your administrator: npsp.TDTM_Contact: System.LimitException: Query of LOB fields caused heap usage to exceed limit.

I am the system admin, but I am newer to Salesforce and have no background in development.  If someone could help me out with this error I would really appreciate it. I am not sure what happened to cause this. I have not changed any setup for weeks.