Salesforce Create Sobject Error

When trying to save an integration (connected with SalesForce) that is calling the "Create Sobject"  "Case"

I am getting the following error:

Changes NOT saved - Please reduce the size of configuration inputs

We have a lot of fields in our Case Object and not sure if that is the issue.

I try using an expression to map only a few fields but keep getting the same error.

When I test the integration, it works great but will not get saved with the "Case" Objected selected, so I cannot use it in my app.

Any ideas on how to resolve this issue? 

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