Error - An item with the same key has already been added (4381670)

The following error appears when accessing the Active Roles sync ServiceNow connector, testing connection to ServiceNow, when adding a mapping pair, running existing workflow, etc:

Status:
The Active Roles Sync product team identified duplicated tables in the schema XML file causing the issue.

Workaround:

1.- Rename attached named "servier2test.ServiceNowTablesScheme - fixed.xml" by removing the " - fixed" and replace the original from the ARS Sync server.
2.- Run attached powershell script named "ServiceNowSchemaChecker".
3.- Update the schema following the steps from the following KB article:
https://support.oneidentity.com/active-roles/kb/4336750/how-to-manually-extend-the-schema-of-the-service-now-connector-in-the-active-roles-synchronization-service