Sales invoice error

VAT% has been changed (initial a job task ; Job No =_____\IB\1801\0001. JOb Task number =DHH) in sales line.

Document type ="Invoice’,Document No.="PSI/01-18/00132’,Line no.=‘3000’

What is this error i am not able to understand. Any Help will be appreciated.

Looks like a custom error message - if you copied the message directly.

Where and when does it happen?

It happens when posting a SALES INVOICE

And how was this sales invoice created?
Is the job no. really “_____\IB\1801\0001”?

no it it H2AZAGA\IB\1801\0001

So the error message is NOT a direct copy?
Did you use the create job invoice batch job to create it?