As of Aug 5 Malaysia Electronic Invoicing is available from NetSuite. This solution leverages the Avalara Global E-Invoicing integration and is available now. You can find the relevant SuiteApp in Marketplace.

Strongly suggest you start by having a look here https://www.netsuite.com/portal/partners.shtml which describes the different types of SDN partners. Typically an SDN member is an ISV developing unique add-on solutions as SuiteApps for the NetSuite ERP platform.

I dont have experience with that directly, however EBICS also uses digital signatures. Just know did a quick lookup on github and there are EBICS examples for several languages including javascript implementations that would be worth reading. European Prof Services from NetSuite also has a solution for EBICS banking -…