Hello team, I'm performing PTS testing (PTS 7.4.1 Build 2 and Bluez 5.50 stack) for SIG certification and the test case GATT/SR/UNS/BI-01-C always fails with the following response error codes. Can anyone shed some light on this? Thank you! Test case : GATT/SR/UNS/BI-01-C started - Running test case with ATT bearer setup over BR/EDR. - BR/EDR Connection setup successfully. - BR Security not initiated due to TSPX_security_enabled value. - Sending an ATT request with an unsupported opcode. - Received data 010C-0000-04 - Invalid Error Code received. Expected=0x06 Received =0x4. - Connection terminated successfully. -Final Verdict: FAIL GATT/SR/UNS/BI-01-C finished Test case : GATT/SR/UNS/BI-01-C started - Running test case with ATT bearer setup over BR/EDR. - BR/EDR Connection setup successfully. - BR Security not initiated due to TSPX_security_enabled value. - Sending an ATT request with an unsupported opcode. - Received data 010E-0000-01 - Invalid Error Code received. Expected=0x06 Received =0x1. - Connection terminated successfully. -Final Verdict: FAIL GATT/SR/UNS/BI-01-C finished Test case : GATT/SR/UNS/BI-01-C started - Running test case with ATT bearer setup over BR/EDR. - BR/EDR Connection setup successfully. - BR Security not initiated due to TSPX_security_enabled value. - Sending an ATT request with an unsupported opcode. - Received data 0116-0102-01 - Invalid request handle received. Expected=0x0000 Received =0x201. - Connection terminated successfully. -Final Verdict: FAIL GATT/SR/UNS/BI-01-C finished