Servlet Wrapper Error Page

PLSQL Adapter - PLSQL Error
ORA-06550: line 6, column 54:
PLS-00306: wrong number or types of arguments in call to 'SCT_TOL_SCHEME_SHOW'
ORA-06550: line 6, column 54:
PL/SQL: Statement ignored



 While try to execute sct_tol.sct_tol_scheme_show
 with args

p_lan_code:
	US
p_org_code:
	WELGELEGEN
p_tnt_code:
	PRK23