Hi Gerard - I’m glad to hear that you’re excited! Currently, the integration is set up to expect a single administration. So we’re adding the ability now to choose one if you have multiple.
However, in the meantime, if you raise a support ticket letting us know which administration to use and grant us access, we can set it up for you urgently!
Regarding customers, you can “Map” the existing customers in Twinfield to their Breww equivalent using the Customer mapping tool outlined in this section of the accountancy setup guide. This will mean that duplicates aren’t created in your Twinfield account 