When doing a data deployment, Salesforce may return the following error: “FIELD_INTEGRITY_EXCEPTION:field integrity exception”. This error generally occurs when you are using a data loader tool to do data migration and you attempt to insert the wrong object ID in destination record’s lookup field.
How do I solve a field integrity exception in Salesforce?
To resolve this issue, update your PricebookEntry records and set the "Use Standard Price" field to false before you attempt to update product's unit price.
What is field integrity exception in lightning component?
Summary. In your Summer '19 Sandbox in Developer Console: if you try to make a change and save a Lightning component which queries the user object and it's fields you will sometimes receive a Field Integrity Exception Error relating to one of the fields being queried. Eg: FIELD_INTEGRITY_EXCEPTION.