[SOLVED] Different number of parameters in FORM and PERFORM

Different number of parameters in FORM and PERFORM

I want to avoid copy+paste in my function and want to create a subroutine.

But this fails.

Here is the function (I removed unimportant parts):

FUNCTION /foo/bar .
*"----------------------------------------------------------------------
*"  IMPORTING
*"     VALUE(IV_STATIC_PARAMETER_LIST) TYPE  WDY_KEY_VALUE_LIST
*"----------------------------------------------------------------------

data selection_table TYPE TABLE OF RSPARAMS.

PERFORM GET_REPORT_READ_PARAMETER
    USING IV_DYNAMIC_PARAMETER_LIST
   CHANGING selection_table.

I get this error message:

Different number of parameters in FORM and PERFORM (routine: GET_REPORT_READ_PARAMETER, number of formal parameters: 4, number of actual parameters: 2)

The subroutine looks like this:

FORM GET_REPORT_READ_PARAMETER
  USING parameter_list TYPE  WDY_KEY_VALUE_LIST
  CHANGING sel_table TYPE TABLE OF RSPARAMS.

....

ENDFORM

Any idea why ABAP thinks that there are 4 and not 2 parameters?

Solution

The error is in this line:

CHANGING sel_table TYPE TABLE OF RSPARAMS

By typing the parameter the above syntax is not valid, "OF" and "RSPARAMS" are interpreted as separate CHANGING parameters. You have to type the parameter directly with a table type (like you do for the USING parameter). In this case it can be:

CHANGING sel_table TYPE RSPARAMS_TT.

RSPARAMS_TT is table type of RSPARAMS (you can check in SE11)