Hi Mark,
Thanks for replying. to be honest im not sure what im supposed to use. we had an old site (c# .net) that used an old sage dll, which is now defunct. we would like to reuse that site but we moved over to use sage 50 cloud and the dll is no longer usable. I wish to be able to create sales invoices from this c# environment but i dont really know what i need to do to even start this. Ive used postman to test the urls...but i dont know what i actually need to do...do i need to get autentication as explained here https://developer.sage.com/api/accounting/guides/authentication/ before i actually send any data to sage. The whole Authorization from the start seems overly complex and it is just baffling me
thanks for your help