Paypal API: Security header is not valid Error

03.01.2017 13:39	#1
crimle Name: crimle 09.01.2012 Posts: 50	Paypal API: Security header is not valid Error I bought, installed and configured Paypal API 2.3.11. In test mode when checkout I get this error: SetExpressCheckout failed: Array ( [TIMESTAMP] => 2017-01-03T12:07:06Z [CORRELATIONID] => 197c3760b1042 [ACK] => Failure [VERSION] => 117.0 [BUILD] => 28387177 [L_ERRORCODE0] => 10002 [L_SHORTMESSAGE0] => Security error [L_LONGMESSAGE0] => Security header is not valid [L_SEVERITYCODE0] => Error ) Joomla: 3.6.5 JoomShopping: 4.15.1 PHP: 7.0.13 MySQL: 5.5.53 Website Url: http://www.terrafisch.ch

03.01.2017 15:27	#2
admin (Support Team) Name: Admin 05.08.2010 Posts: 25938	Aw: Paypal API: Security header is not valid Error Error in API username / API password / test mode.

04.01.2017 11:57	#3
crimle Name: crimle 09.01.2012 Posts: 50	Aw: Paypal API: Security header is not valid Error Different API username / API password for test mode?

04.01.2017 13:41	#4
admin (Support Team) Name: Admin 05.08.2010 Posts: 25938	Aw: Paypal API: Security header is not valid Error Yes. Need enter correct API username / API password for test mode.

04.01.2017 13:48	#5
crimle Name: crimle 09.01.2012 Posts: 50	Aw: Paypal API: Security header is not valid Error Ok. Thank you. I was not aware of the fact that there are different credentials.