Parameter missing problem

hi all,

i m upgrading from sap4.7 to ECC6.0, when i m executing a

program ZAQA1ITUSERZPENDORD03 i m getting an error

Missing parameter with PERFORM. and perform is AUTHORITY_BEGIN but problem is that i m not getting which parameter is missing. can anybody tell me that what should i do?

here is the code perfom and form.

perform authority_begin(rsaqexce).

form authority_begin using p_auth_classname type AQS_CLSNA.

• nicht bei generischen BW Extraktoren

if %memmode = 'D'.

exit.

endif.

perform authority_init using p_auth_classname.

call method iref->access_authority_begin.

endform. "AUTHORITY_BEGIN

form authority_init using p_auth_classname type AQS_CLSNA.

data: l_oref type ref to object,

l_wa_aqif type aqif_c.

if iref is initial.

• l_wa_aqif-clsname = 'CL_QUERY_TAB_ACCESS_AUTHORITY'. " default

• select single clsname from aqif_c into l_wa_aqif-clsname " Kunde

• where action = co_act_tab_access

• and ifcond = space. " (SLIN)

• if sy-subrc <> 0.

• select single clsname from aqif_s into l_wa_aqif-clsname " SAP

• where action = co_act_tab_access

• and ifcond = space.

• endif.

create object l_oref type (p_auth_classname).

iref ?= l_oref.

endif.

endform. "AUTHORITY_INIT

please help me.

regards saurabh.