BAPI or FM to delete a QM task (Q1)

We have an objective to delete a task for a notification within the exit ZXQQMU20.  BAPI_ALM_NOTIF_DATA_DELETE appears to be of use only for a PM/CS notification where we have a quality notification.

An attempt to use this BAPI on a quality notification results in the procedure as follows:

Is anyone aware of another BAPI or function module to accomplish the task deletion?  Alternatively, what exactly needs to be done to customize and alter the entries for tables TQ8T and TQ80?

Thanks - Mike