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I need a serious help. Need help on scheduling campaign using asp.net. I have already configured my constant contact account to use api and I was success on using other api such as:
1. Retrieve Contact
3. Read/Write ContactList
I was trying to schedule campaign and to do that I used HttpClient. I know have correct json data to post it. But when I make api call it always return Error:400, BadRequest. My asp.net code looks like as below:
There are a few different things that can cause a 400 error. What is the error response message that is being returned with the error code 400? For example, "Property was found but is not permitted at this location" or "Unable to parse JSON payload"
These will be key to determining why your call is being rejected.