"ABAP Basics" Book - arithmetic expression error in the sample code

[Former Member]

Hi all,

I have just started learning ABAP on mini SAP system (NW7.01) by following "ABAP Basics" book.

This question might be a FAQ, but I have spent a few days searching a right answer without success.

I appreciate if you could help me on this.

On the page 162, there is a function module sample, which contains the line as following:

e_amount = i_km * '0.3'.

Here l_km (import) is type of i, and e_amount (export) is type of f.

Though I do not think of any problem with this line, it throws an arithmetic expression error when executed directly for testing as well as when called from a program.

When I tried a similar thing in a program, it was fine.

However within a function module it throws this error.

Thanks in advance.

Terry

[Former Member]

hi it throws no error for me while executing function module.

May be you would have done a mistake some where. please check.

[Former Member]

which FM is that?

[Former Member]

That is zptb00_calculate_travel_expens .

Thanks.

[Former Member]

hi,

first let me welcome you to SDN,.

now,its a custom FM, so you have to show us what code you have for that FM. could you?

[Former Member]

Hi,

Are you sure this line is causing error?? I executed only this line in a test FM ..and I got the following output:

Import parameters Value

I_KM 1

Export parameters Value

E_AMOUNT 2,9999999999999999E-01

[Former Member]

Like I said before, I do not think any problem about the code itself.

I suspect some environmental things?

I should have mentioned SAP mini system NW7.01 is running on Vista Business?

To be specifc, I receive this message:

Arithmetic operations are only expected for operands that can be converted to numbers.

(numeric operands). - (numeric operands). - - - -

with the following function module:

[code]

FUNCTION ZPTB00_CALCULATE_TRAVEL_EXPENS.

*"----

---

""Local Interface:

*" IMPORTING

*" VALUE(I_KM) TYPE REF TO I

*" EXPORTING

*" VALUE(E_AMOUNT) TYPE REF TO F

*" EXCEPTIONS

*" FAILED

*"----

---

e_amount = i_km * '0.3'.

IF sy-subrc <> 0.

RAISE failed.

ENDIF.

ENDFUNCTION.

[/code]

[Former Member]

Well use correct code..

In the first post you mentioned type, while actually you are using Type Ref.

Keshu is correct, do not use Type Ref To.

[Former Member]

*"IMPORTING
*" VALUE(I_KM) TYPE REF TO I
*" EXPORTING
*" VALUE(E_AMOUNT) TYPE REF TO F

this is where the error stays.

define them as:

I_KM TYPE I .

E_AMOUNT TYPE F.

dont use type ref to

[Former Member]

Thank you guys all.

I feel as if I were so stupid......

Thanks again all.

Terry

[Former Member]

Hi,

I am making the exercises of the book. Do you have the source code anywhere available. It would be nice to have it for speeding up the learning process.

Thanks

[Former Member]

plz note that if u do a arithmatic on f type and i no issues as long as the var to hold res is also f type.

Plz go thru SAP HELP AND SAP online materials alongwith ur books

[kesavadas_thekkillath]

hi it throws no error for me while executing function module.

May be you would have done a mistake some where. please check.

[kesavadas_thekkillath]

"TYPE REF TO "

Instead of this use "TYPE" for both export and import.

When I tried a similar thing in a program, it was fine.

How did it happen ? I dont think so it will be correct in program

Edited by: Keshu Thekkillam on Sep 18, 2009 1:17 PM