Document sequence no error while manually entering bank statement

The issue is inspite of setting sequential numbering I get the following error message. I guess I have not set sequential numbering for bank statement correctly. I need to know which application and category do I need to set for bank statement sequential number

Error message

"APP-FND-01702: An assignment does not exist for these parameters and one is mandatory. 

Cause: The profile option sequential numbering is defined to have sequential numbering always used. The current set of parameters does not have a sequence assigned

Action: Go to the assign sequence screen and assign the sequence to the current set of parameters "