Power Automate Issue - Business Central to Blackbaud (Create Journal Entry JSON Error)

PLEASE HELP! I've spent way too much time with this issue. Claude has been helping me set up a connection from Business Central through Power Automate into Blackbaud. I'm running into an issue with the "Create Journal Entry (single distribution)" function in Power Automate. I'm betting the following error message. I'm a novice in this world so any help would be greatly appreciated. Claude thinks its an issue with the API and not a Power Automate design issue. Anyone else have ideas? You'd be my hero!

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