On the Inventory Part In Stock screen there is a RMB > Print Barcode Labels, on running DEBUG found that this makes the following call:

BEGIN 
:p0 := &AO.Inventory_Part_Barcode_API.Check_Inv_Part_Barcode_Exist(:p1 , :p2 , :p3 , :p4 , :p5 , :p6 , :p7 , :p8 ); 
EXCEPTION 
WHEN &AO.Error_SYS.Err_Security_Checkpoint THEN 
raise; 
WHEN OTHERS THEN 
rollback; 
raise; 
END;

On viewing the function I can see the values expected

How would I make this a RMB on the Receive Shop Order > Inventory Receipt tab?

I tried PL/SQL and updated the :p1 to :p8 with the fields that the package calls: 

e.g.  Check_Inv_Part_Barcode_Exist(contract, part_no, configuration_id, lot_batch_no, serial_no, eng_chg_level, waiv_dev_rej_no, activity_seq)

BEGIN 
Inventory_Part_Barcode_API.Check_Inv_Part_Barcode_Exist
(contract, part_no, configuration_id, lot_batch_no, serial_no, eng_chg_level, waiv_dev_rej_no, activity_seq);
EXCEPTION 

WHEN Error_SYS.Err_Security_Checkpoint 
THEN 
raise;

WHEN OTHERS THEN 
rollback; 
raise; 
END;

Please advise.