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nbabariya
Contributor
Posted on

TIMESTAMP=2016-12-26T09:14:16Z&CORRELATIONID=d2e17510f1ff9&ACK=Failure&VERSION=204&BUILD=28258785&L_ERRORCODE0=10002&L_SHORTMESSAGE0=Security error&L_LONGMESSAGE0=Security header is not valid&L_SEVERITYCODE0=Error

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security header

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MTS_Ciaran
PayPal Employee

If the API credentials are 100% correct, then two things to check...

 

- Are you using live or sandbox credentials?

- Are you using the live or sandbox API endpoint?

 

if you send sandbox API credentials to the live environment you will get this error for example.

 

 

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