Exercise $3\mathrm{.}8$

$$ Model the following process.

A restaurant chain submits a purchase order $($PO$)$ to replenish its warehouses every Thursday. The restaurant chain$$s procurement system expects to receive either a $$ PO Response$$ or an error message. However, it may also happen that no response is received at all due to system errors or due to delays on handling the PO on the supplier$$s side. If no response is receive d by Friday afternoon or if an error message is received, a purchasing officer at the restaurant chain$$s headquarters should be notified. Otherwise, the PO Response is process normally.

$($ I want the BPMN diagram as I want to check the one I have drawn is correct or not $)$