Hi D A,
Have you tried with L_TO_CREATE_TR ?
To check the required parameters you can go to function group L03B and set a breakpoint in the function modules (or set via debug):
L_TO_CREATE_SINGLE
L_TO_CREATE_TR
L_TO_CREATE_MULTIPLE
L_TO_CREATE_POSTING_CHANGE
Execute the tcode LT06 to create the TO and check if the breakpoint is reached then check the parameters.
Regards,
Felipe