Vendor Creation Error through X++

When I try to create a new Vendor getting error like

'Cannot create a record in Vendors (VendTable). Vendor account: **** , **** The record already exists.'

There is no such vendor in Vendor Table and I checked NextVal from SystemSequences Table where NextVal is greater than Max(RecId) of VendTable.

Please help me to solve this issue.

Please Find the attachment for reference.

Any suggestion will be greatly appreciated.

Regards,