2. These PO remain open in the system is due the clerical error that we didn’t tick the checkbox “ GR_Bsd IV” after the GRN is being issued . However , for some reason this action of ticking the box were not being communicated to all Buyers community as a “Mandatory” procedure. Consequently , these PO are still sitting in the SAP being recorded as “open PO” due to the clerical mistakes as mentioned above, even though all these POs were “closed PO “ as both GRN & invoice received and payment made.