PM_CONN_SEC_ERROR_PIN_OR_KEY_MISSING

#define PM_CONN_SEC_ERROR_PIN_OR_KEY_MISSING   (PM_CONN_SEC_ERROR_BASE + 0x06)

#include <peer_manager_types.h>

Encryption failed because the peripheral has lost the LTK for this bond. See also BLE_HCI_STATUS_CODE_PIN_OR_KEY_MISSING and Table 3.7 ("Pairing Failed Reason Codes") in the Bluetooth Core Specification 4.2, section 3.H.3.5.5 (@linkBLEcore).