Here's how to create and send a Peppol Credit Note from system to a recipient on GST InvoiceNow:

Here’s the step-by-step process (as shown in your screenshots):

1) Go to the Peppol application by clicking on its icon in the main dashboard or by using the application menu.

2) Credit Note Creation & Sending  

Navigate to Accounting → Customers → Credit Notes, and use Create to draft one from scratch.  

You created a credit note and used Send to GST InvoiceNow to push it to the Singapore Peppol network.

3) Transmission Status (Peppol / InvoiceNow).

The system confirms with Send Success, showing tracking IDs and IRAS confirmation that the GST InvoiceNow test endpoint has received it.

To get more details how to create & send a Peppol Invoice to GST InvoiceNow in Metro Accounting System, please do contact us at  support@metrogroup.solutions