AR ERROR: The value(s) for this entry violate a unique index that has been defined for this form (ARERR 382)

AR ERROR: The value(s) for this entry violate a unique index that has been
defined for this form (ARERR 382)

1. Turn on SQL log file and then reproduce the problem.
2. Check arerr.log file
3. Access database directly and run below commands:
select schemaId from arschema where name='Name of Form';
Then using this as an example (replace your schemaId here):
select nextId from arschema where schemaId = 101;
nextId = 1775251, we have tickets up to 1775297 in T101
update arschema set nextId = 1775298 where schemaId = 101;
See also the information in the Server Administrator's Guide on changing the Next Available Entry Id. If this
table has long field or diary field, you also need to check and update nextId for the Form based on the values in
the long field tables or diary tables with same commands that show above.