Transform synchronously BR is throwing error

Hi,

While inserting the data from SOAP to service now it is working fine. incident number has a coalesce. When try to update the data by passing the incident number, it is getting inserted in the import set table with the following error:

Operation against file 'incident' was aborted by Business Rule 'Transform synchronously^(sys_id of the record)'. Business Rule Stack:Transform synchronously,Justification on few fields changes.

If I change the import set mode to asynchronous, error is not coming as business rule is only running on synchronous. But Asynchronous will take time to update the incident record.

Please help me on this.

Regards,

Anasuya