Data Deployment Error: CANNOT_INSERT_UPDATE_ACTIVATE_ENTITY:FSL.TR020_ResourceTerritories_BeforeInsert: execution of BeforeInsert caused by: System.NullPointerException: Attempt to de-reference a null object (FSL)

When doing a data deployment, Salesforce may return the following error:

“CANNOT_INSERT_UPDATE_ACTIVATE_ENTITY:FSL.TR020_ResourceTerritories_BeforeInsert: execution of BeforeInsert caused by: System.NullPointerException: Attempt to de-reference a null object (FSL)”

The null pointer exception in this case means a controller or query is expecting a specific field to be populated in order to insert the record.

To fix this issue, make sure the WhoId of the service resource user and WhatId of the Service Territory record are populated and are both active.

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