India GST - Tax rate creation question

Under GST there are three tax types. IGST, CGST, SGST.

GL Accounts are associated at the tax type.

You then create tax rates that belong to tax types and the accounting from the tax types cascades down to the new related tax rates created on the accounts tab once associated to the OU and IO orgs and locations.

I was able to create one tax rate under each tax type, but when I tried to create a second tax rate under a tax type and tried to associate that new rate to OU and IO, It gives an error saying it cannot be duplicated. I'm having GST Phase 2 patches applied right now to our test system, so more detailed error cannot be provided.