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eCART with PayPal getting Security Header is not Valid error

Thread began 9/01/2009 11:36 am by david353947 | Last modified 9/01/2009 2:40 pm by Jason Byrnes | 1182 views | 1 replies |


eCART with PayPal getting Security Header is not Valid error

I'm getting an error trying to envoke either Express Pay or Web Payments Pro and implemented the Debugging PayPal eCart code to see the error message. Please open a ticket and contact me to resolve as another week has passed and still I have no resolution.

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Jason ByrnesWebAssist

The security header is not valid error message means that you are not using the correct API Credentials.

if you request live Credentials and set the transaction to use the sandbox server, you will get this error, or if you are using sandbox API credentials and connecting to the live server you will get this error.

Also make sure that you have accepted the billing agreement with paypal after requesting the API credentials.

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