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usacorporateAsked on July 11, 2015 at 12:05 PM
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jonathanReplied on July 11, 2015 at 5:24 PM
Was it similar to the issue mentioned here?
-PayPal-Security-error-Security-Header-is-Not-Valid-
Most likely issue here Header is that your API credentials are not correct. For example, you might have an extra character, a wrong character or less characters added for API credentials, which causes this.
Once you add correct details you should no longer see any errors shown.
Let us know if not resolved.
Thanks.