TMS320F28379D:

I2C interrupt service routine not triggered?

When I debug/run my code it ends up in a routine called   Interrupt_defaultHandler  and reports the variables: pieVect=0x0DB1  and vectID 88

My code contains these lines:

Interrupt_initModule();
Interrupt_initVectorTable();
Interrupt_register(INT_I2CA, &i2cAISR);

I2C_disableModule(I2CA_BASE);
I2C_initMaster(I2CA_BASE, DEVICE_SYSCLK_FREQ, 400000, I2C_DUTYCYCLE_33);
I2C_setBitCount(I2CA_BASE, I2C_BITCOUNT_8);
I2C_setSlaveAddress(I2CA_BASE, SLAVE_ADDRESS);
I2C_setEmulationMode(I2CA_BASE, I2C_EMULATION_STOP_SCL_LOW);
I2C_enableInterrupt(I2CA_BASE, I2C_INT_STOP_CONDITION |
I2C_enableFIFO(I2CA_BASE);
I2C_clearInterruptStatus(I2CA_BASE, I2C_INT_RXFF | I2C_INT_TXFF);
I2C_enableModule(I2CA_BASE);

    if(I2C_getStopConditionStatus(I2CA_BASE))
    {
        return(ERROR_STOP_NOT_READY);
    }

    I2C_setSlaveAddress(I2CA_BASE, SLAVE_ADDRESS);

    if(I2C_isBusBusy(I2CA_BASE))
    {
        return(ERROR_BUS_BUSY);
    }

    I2C_setDataCount(I2CA_BASE, (msg->numBytes + 2));

    I2C_putData(I2CA_BASE, msg->command);
    I2C_putData(I2CA_BASE, msg->memoryHighAddr);
    I2C_putData(I2CA_BASE, msg->memoryLowAddr);

    for (i = 0; i < msg->numBytes; i++)
    {
        I2C_putData(I2CA_BASE, msg->dataBuffer[i]);
    }

    //
    // Send start as master transmitter
    //
    I2C_setConfig(I2CA_BASE, I2C_MASTER_SEND_MODE);
    I2C_sendStartCondition(I2CA_BASE);
    I2C_sendStopCondition(I2CA_BASE);

INT_I2CA  registers vector 0x0DB0  (not 0x0DB1)  the register description is:

How is it ending up on an odd address?  I don't think that I even register that address  "0x0DB1"