Hello,
I have built a custom connector that executes the CalculateRollupField function on demand for a given Rollup field in an entity inside a Dynamics Instance. I set up the app registration as well. Testing the connector itself works just fine. However, whenever I try to use this connector in Power Automate I get Flow Checker errors, it won't allow me to save my Power Automate flow.
The message I get is 'Invalid Expressions for the input parameters of operation 'calculaterollupfield'" I read on some forums that it might have to do with the @ being used at the variable level of the connector; however I can't remove the @ because then the query would not work.
Any ideas on how to work around this? I can't use HTTP connectors because they are blocked by Organizational Policies.
Error capture
@murshed seems to be a known issue for a while, do you know of any solution, the ones on the post you mention dont work
Please checkout this post. https://powerusers.microsoft.com/t5/Building-Power-Apps/Custom-Connector-Invalid-expression-for-Parameter/td-p/587563
It's a known issue, please try workaround suggested by the users.