How to setup transaction limit for P-card while raising requisition in RSSP?

Summary:

While raising a requisition using a Procurement Card, system is not validating the requisition amount against the 'Maximum Amount per Transaction' setup on the Corporate card.

We've reviewed the documentation, which says, 'The sum of amounts (not including tax) of all lines that have the Employee Procurement Card assigned must be less than the transaction limit of the Employee Procurement Card. If this validation fails, requisition submit won’t be allowed.'

However, we are unable to reproduce this.

How to give a warning to the 'Preparer' while raising a Requisition using a P-Card when the Requisition Amount exceeds the 'Maximum Amount per Transaction' setup on the P-card?