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PayPal API testing accounts

Thread began 10/21/2014 1:39 pm by Christopher West | Last modified 10/21/2014 2:03 pm by Christopher West | 316 views | 3 replies

Jason ByrnesWebAssist

Security header is not valid


This means one of the following:
- The API Credential are for a live transaction and you are using sandbox or vice versa
- You have not accepted the billing agrement
- The api credentials are not valid for Direct Checkout only Express checkout
- The api credentials may just be bad, and need to be regenerated

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