Calvin Noronha on X: "Keep this handy in case you run into this error sometime - "System.DmlException: Insert failed. First exception on row 0; first error: INVALID_CROSS_REFERENCE_KEY, You can only assign users
![apex - System.DmlException: Insert failed. First exception on row 0; first error: INVALID_CROSS_REFERENCE_KEY, invalid cross reference id: [] - Salesforce Stack Exchange apex - System.DmlException: Insert failed. First exception on row 0; first error: INVALID_CROSS_REFERENCE_KEY, invalid cross reference id: [] - Salesforce Stack Exchange](https://i.stack.imgur.com/LrrQM.png)
apex - System.DmlException: Insert failed. First exception on row 0; first error: INVALID_CROSS_REFERENCE_KEY, invalid cross reference id: [] - Salesforce Stack Exchange
![apex - System.DmlException: Insert failed. First exception on row 0; first error: FIELD_CUSTOM_VALIDATION_EXCEPTION, Duplicate actives is not Allowed : []c - Salesforce Stack Exchange apex - System.DmlException: Insert failed. First exception on row 0; first error: FIELD_CUSTOM_VALIDATION_EXCEPTION, Duplicate actives is not Allowed : []c - Salesforce Stack Exchange](https://i.stack.imgur.com/e8nmY.png)
apex - System.DmlException: Insert failed. First exception on row 0; first error: FIELD_CUSTOM_VALIDATION_EXCEPTION, Duplicate actives is not Allowed : []c - Salesforce Stack Exchange
I Love Coding.....You?: System.DmlException: Insert failed. First exception on row 0; first error: CANNOT_EXECUTE_FLOW_TRIGGER, The record couldn't be saved because it failed to trigger a flow.
dlrs_c2godaTransactionLineItemTest.testTrigger System.DmlException: Insert failed. First exception on row 0; first error: FIELD_CUSTOM_VALIDATION_EXCEPTION, Object validation has failed. Transaction Line Item: Object validation has failed. Current ...
![How to handle DUPLICATE_USERNAME error while performing deployment | Technical Potpourri from Sudipta Deb How to handle DUPLICATE_USERNAME error while performing deployment | Technical Potpourri from Sudipta Deb](http://3.bp.blogspot.com/--lj00hF_T7o/VV9QHpEJylI/AAAAAAAAdy8/Z_I7JGuZmDU/s640/do-not-duplicate.jpg)
How to handle DUPLICATE_USERNAME error while performing deployment | Technical Potpourri from Sudipta Deb
![salesforce1 app - Getting error System.DmlException: Insert failed. First exception on row 0; first error: DUPLICATES_DETECTED, Use one of these records?: [] - Salesforce Stack Exchange salesforce1 app - Getting error System.DmlException: Insert failed. First exception on row 0; first error: DUPLICATES_DETECTED, Use one of these records?: [] - Salesforce Stack Exchange](https://i.stack.imgur.com/ZAGL8.png)
salesforce1 app - Getting error System.DmlException: Insert failed. First exception on row 0; first error: DUPLICATES_DETECTED, Use one of these records?: [] - Salesforce Stack Exchange
![Error: An Account, Contact, or User must be selected to save a record - When Adding New Walk-In Attendee to Event in CRM for iPad – Veeva Product Support Portal Error: An Account, Contact, or User must be selected to save a record - When Adding New Walk-In Attendee to Event in CRM for iPad – Veeva Product Support Portal](https://support.veeva.com/hc/article_attachments/360018113474/mceclip0.png)