function with parameter passing giving error

how i can resolve the below error.. it is giving error while creating function.

CREATE or replace function software_deletion

(

    p_spsn        IN VARCHAR2,

    p_spon          IN VARCHAR2,

    p_version     IN VARCHAR2

)

RETURN NUMBER

IS

p_result NUMBER;

cursor c1 select distinct sd.swid, sdd.swdid, sp.token from software_data sd, software_data_detail sdd, software_platforms sp where sd.swid = sdd.swid and sp.swdid = sdd.swdid and sd.spsn = p_spsn and sd.spon = p_spon and sdd.version = p_version and sdd.package_type = 'PP';

v_swid c1%rowtype;

v_swdid c1%rowtype;

v_token c1%rowtype;