I added the Old Identification Number as part of the patient registration app (as described here Registration App Configuration - Documentation - OpenMRS Wiki > Collecting Additional Patient Identifiers in the Registration App)
When I hit save I see a Validation Error: Invalid identifier. I went to look at the patient identifiers (openmrs/admin/patients/patientIdentifierType.list) and there is no identifier validator enabled. Wondering what else I should look at so this identifier doesn’t go through any validation.