Deactivating an error message in packing instructions

Hi,

We are getting an error when creating the packing instructions POP1 as below:

"A component cannot appear in a packing instruction more than once

Message no VHU01138 "

We face this error during creation of a new line item with the same component.

Has anybody faced this error?

We need to deactivate this error. Please advise how to do it?

Regards,

Javed