Title: Paypal API Call Failed
Last modified: February 27, 2017

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# Paypal API Call Failed

 *  Resolved [chornick](https://wordpress.org/support/users/chornick/)
 * (@chornick)
 * [9 years, 2 months ago](https://wordpress.org/support/topic/paypal-api-call-failed/)
 * I’m having a difficult time intergrading this system with paypal. I entered all
   of the api information from paypal – I did read the manual – but I get this error
   once I try and check out from the booking system.
 * Any suggestions?
 * > Express check out API call failed.
   > Error code:
   >  10002
   > Error severity code:
   >  Error
   > Detailed error message:
   >  Security header is not valid.
   > Short error message:
   >  Security error.

Viewing 4 replies - 1 through 4 (of 4 total)

 *  Plugin Author [DOTonPAPER](https://wordpress.org/support/users/dotonpaper/)
 * (@dotonpaper)
 * [9 years, 2 months ago](https://wordpress.org/support/topic/paypal-api-call-failed/#post-8865821)
 * Hello,
 * Make sure you use the correct credentials, method (live or sandbox) or if there
   is a white space in the credentials fields.
    The errors means that the API credentials
   are not correct.
 * Thank you.
 *  Thread Starter [chornick](https://wordpress.org/support/users/chornick/)
 * (@chornick)
 * [9 years, 2 months ago](https://wordpress.org/support/topic/paypal-api-call-failed/#post-8894442)
 * Are there better instructions on getting the correct credentials? I’ve worked
   with paypal before and it still isn’t working for me.
 *  Thread Starter [chornick](https://wordpress.org/support/users/chornick/)
 * (@chornick)
 * [9 years, 2 months ago](https://wordpress.org/support/topic/paypal-api-call-failed/#post-8894624)
 * Never mind… I’m dumb. I kept on creating a certificate when I should have been
   creating a signature.
 *  Plugin Author [DOTonPAPER](https://wordpress.org/support/users/dotonpaper/)
 * (@dotonpaper)
 * [9 years, 2 months ago](https://wordpress.org/support/topic/paypal-api-call-failed/#post-8897434)
 * Glad you could manage the situation.
    Please write if you have more questions.
 * Thank you.

Viewing 4 replies - 1 through 4 (of 4 total)

The topic ‘Paypal API Call Failed’ is closed to new replies.

 * ![](https://ps.w.org/booking-system/assets/icon-256x256.png?rev=2192807)
 * [Pinpoint Booking System - Version 2](https://wordpress.org/plugins/booking-system/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/booking-system/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/booking-system/)
 * [Active Topics](https://wordpress.org/support/plugin/booking-system/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/booking-system/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/booking-system/reviews/)

## Tags

 * [paypal](https://wordpress.org/support/topic-tag/paypal/)
 * [Pinpoint Booking System](https://wordpress.org/support/topic-tag/pinpoint-booking-system/)

 * 4 replies
 * 2 participants
 * Last reply from: [DOTonPAPER](https://wordpress.org/support/users/dotonpaper/)
 * Last activity: [9 years, 2 months ago](https://wordpress.org/support/topic/paypal-api-call-failed/#post-8897434)
 * Status: resolved