Problem solved by use of:
https://community.nxp.com/t5/i-MX-RT/IMXRT1062-Flexcan-FD-FIFO-Example/m-p/898644#M2914
And API to clear status flags FLEXCAN_ClearStatusFlags(EXAMPLE_CAN, kFLEXCAN_ErrorFlag );
Problem solved by use of:
https://community.nxp.com/t5/i-MX-RT/IMXRT1062-Flexcan-FD-FIFO-Example/m-p/898644#M2914
And API to clear status flags FLEXCAN_ClearStatusFlags(EXAMPLE_CAN, kFLEXCAN_ErrorFlag );