Operation against ... was aborted by business rule

This error can occur if one or more business rule on the target table in ServiceNow prevent the data from being migrated.

To resolve this, either change the source data and/or mappings to prevent the business rule from triggering the error OR run the migration again without business rules.  This option can be set for the table mapping (open mapping and select the Options Tab, then change the Migration Method to 'Import Set, no business rules').   

Alternatively you can run all mappings without business rules by setting the same option in the Execution options (after you select Project->Execute Open Project).

If it is required that other business rules continue to run, consider temporarily deactivating certain business rules during migration, or updating their conditions to prevent them from being run for inserts/updates made by the user that Precision Bridge connects to the Service Now target instance with.