I am getting Internal Server Error on Contact Upload from Salesforce to Constant Contact

[C4HCO]

I am getting Internal Server Error on Contact Upload from Salesforce to Constant Contact

[C4HCO]

Adding to my post I am getting Internal Server error while uploading contact from SF --> CTC through SF App

[Jimmy_D]

Hello @C4HCO,

If you are using the Salesforce App that was created by Constant Contact the reason you would be getting the error is because it is no longer supported. We have stopped support of that app and suggest to use the third party app from Cazoomi.