Hello @PrincessDS,
Thank you for reaching out to Constant Contact's API Support.
If you are using the same format and getting an error than something with the data is causing the problem. To keep your data secure you can email us at webservices(at)constantcontact(dot)com and we'll take a look in to it. Please include any relevant information.
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Hi Everyone,
The cause of these errors are generally unique to each scenario. The are most likely caused by bad or invalid data. If there is no obvious data that can be located in your import that is causing a problem can you please email your data payload to us so we can look at each case individually. You can email us at webservices(at)constantcontact(dot)com.
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