https://devzone.nordicsemi.com/f/nordic-q-a/35784/state-probleme-invalid-state-error-8i want to sinchronyze diferent peripheral and 1 central thank&#39;s to the gpiote&#39;s state. but i have a error 8 invalid state whereas i had initialize help me please !!! this is my code : static app_gpiote_user_id_t m_example_user_id; static voiden-USTelligent Community 13Tue, 26 Jun 2018 12:48:28 GMThttps://devzone.nordicsemi.com/thread/137685?ContentTypeID=1Tue, 26 Jun 2018 12:48:28 GMT137ad170-7792-4731-bb38-c0d22fbe4515:18f971ff-102a-4a5e-93c0-e5c22ad6b272lmouelo<p>yes i try and the function return&nbsp; is&nbsp;#define NRF_ERROR_INVALID_STATE (NRF_ERROR_BASE_NUM + 8) ///&lt; Invalid state, operation disallowed in this state</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/137682?ContentTypeID=1Tue, 26 Jun 2018 12:42:22 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d56b5167-18ac-4d3f-a2dd-2879f83eaa71Mttrinh<p>Hi,</p> <p>Have you tried to debug? Which function returns this error?</p><div style="clear:both;"></div>