CALL_FUNCTION_NOT_FOUND dump on RFC eventhough it exists and is active.

Question

Hi,
From SRM system in a BAdi, I am calling a custom function module (RFC) which exists in remote ECC system to make certain checks.
The problem is that when the system calls the customer function module, it gives dump in ST22 as :
Runtime Errors : CALL_FUNCTION_NOT_FOUND
details as below :
What happened?
    The function module "YLN_TAXCODE_SELECTION_IN" is called,
    but cannot be found in the library.
    Error in the ABAP Application Program
    The current ABAP program "YCL_IM_LEN_TAXCODEDET_IN======CP" had to be
     terminated because it has
    come across a statement that unfortunately cannot be executed.
What can you do?
    Note down which actions and inputs caused the error.
    To process the problem further, contact you SAP system
    administrator.
    Using Transaction ST22 for ABAP Dump Analysis, you can look
    at and manage termination messages, and you can also
    keep them for a long time.
I have checked that the above Custom Function module exists and is active in ECC system.
Please give inputs and suggest.
Thanks.

Answer 1

I tried around a little bit:
1) valid function name and valid destination: works fine
2) valid function name and destination 'NONE':
- dumps CALL_FUNCTION_REMOTE_ERROR and CALL_FUNCTION_NOT_FOUND in calling system
3) valid function name and invalid destination:
- dump CALL_FUNCTION_NO_DEST in calling system
4) invalid function name and valid destination:
- dumps CALL_FUNCTION_REMOTE_ERROR in calling system and CALL_FUNCTION_NOT_FOUND in remote system
5) valid function name and empty destination:
- dump CALL_FUNCTION_NOT_FOUND in calling system
Are you sure you don't have a typo in your function name, as in 4), and that you are calling the correct destination (not sure how many you have in your landscape)?
Thomas