Hi there,
I just cheked API document and it seems I can solution developed for your requirements. I have experience of more than 5 years working with API integration.
I need to know more about requirements by following questions:
1) Which is Tax portal that you want to send Transaction to? Can you share link of their API documentations?
2) What data do you want to send from your MYOB account?
3) If MYOB don't provide direct solution, I can develop a middle-ware application that will work with both (MYOB and tax porta) API to achieve your requirements. Will that be fine with you?
I would like to know more about it, so if you shortlist me please get back to me with answers of above.
Thank you.