Hi EchoAlpha,
If the currency is being sent in the payload and matches Business Central like for like in terms of spelling and case, it's possible that the issue is related to the setup of the currency in Business Central.
Here are a few things you can check to troubleshoot the issue:
Check that the currency has been set up correctly in Business Central, including the exchange rate. Go to "Currency Exchange Rates" page in Business Central and make sure that the exchange rate for the currency is correct.
Check that the user account used to run the Power Automate flow has the necessary permissions to create journal entries in the specified currency. Make sure the user has the "Posting to G/L Journal in Foreign Currency" permission set to "All" in their user setup.
Check that the "Currency Code" field is included in the payload sent by Power Automate, and that it matches the exact spelling and case of the currency code in Business Central. You can also try sending the currency code in both uppercase and lowercase to see if that makes a difference.
Check that the currency code is mapped correctly in the integration between Dynamics Sales and Business Central. Make sure that the currency code field in Dynamics Sales is mapped to the "Currency Code" field in Business Central.
If none of the above solutions work, you may need to contact Microsoft Support for further assistance.
