Error when trying to Delete a Line Item on a Requisition

At times when trying to Delete a line item on a Requisition, an error message is displayed which directs user to contact Bentley Support.

Not able to Delete the line item as the RFQ Process has been completed.

Since it is a lengthy process to then track all the transactions and reverse them in order to Delete this Requisition Line, does any one have a suggestion to REMOVE this entry from the Requisition itself?