Dynamic search help with F4IF_INT_TABLE_VALUE_REQUEST triggers an error ASSIGN_LENGTH_0 in SAPLSDH4

[Former Member]

Hey experts,

I have the following code:

PARAMETERS: pa_persa type pa0001-werks.
PARAMETERS: pa_pernr TYPE pa0001-pernr.

at SELECTION-SCREEN on VALUE-REQUEST FOR pa_pernr.

 DATA: lt_retdynr TYPE TABLE OF ddshretval,
       lt_dynpread LIKE dynpread OCCURS 0 WITH HEADER LINE.
 DATA: BEGIN OF lt_shout OCCURS 0,
         pernr TYPE pernr,
       END OF lt_shout.

 lt_dynpread-fieldname = 'PA_PERSA'.
 APPEND lt_dynpread.
 CLEAR lt_dynpread.

 CALL FUNCTION 'DYNP_VALUES_READ'
 EXPORTING
 dyname = sy-repid
 dynumb = sy-dynnr
 TABLES
 dynpfields = lt_dynpread.

 if lt_dynpread-fieldvalue is INITIAL.
 CALL FUNCTION 'F4IF_INT_TABLE_VALUE_REQUEST'
 EXPORTING
 retfield = 'PERNR'
 dynpprog = sy-repid
 dynpnr = sy-dynnr
 DYNPROFIELD = 'PA_PERNR'
 value_org = 'S'
 TABLES
 value_tab = lt_shout
 return_tab = lt_retdynr.
 else.

 SELECT pernr from pa0001 into TABLE lt_shout up to 20 rows where werks = lt_dynpread-fieldvalue.
 sort lt_shout by pernr .
 delete ADJACENT DUPLICATES FROM lt_shout.

 CALL FUNCTION 'F4IF_INT_TABLE_VALUE_REQUEST'
 EXPORTING
 retfield = 'PERNR'
 dynpprog = sy-repid
 dynpnr = sy-dynnr
 DYNPROFIELD = 'PA_PERNR'
 value_org = 'S'
 TABLES
 value_tab = lt_shout
 return_tab = lt_retdynr.

when I press the search help button for the pa_pernr on selection screen it triggers an error ASSIGN_LENGTH_0 in SAPLSDH4
here are the lines where the error is occurred:

CASE ls_listfields_new-mask+1(1).
         WHEN ' '.
           len_alt = ls_listfields_new-outputlen.
           len_neu = ls_listfields_new-intlen.
         WHEN 'E'.
           len_alt = ls_listfields_new-intlen.
           len_neu = ls_listfields_new-outputlen.
         WHEN 'I'.
           len_alt = ls_listfields_new-intlen.
           len_neu = ls_listfields_new-intlen.
         WHEN 'O'.
           len_alt = ls_listfields_new-outputlen.
           len_neu = ls_listfields_new-outputlen.
       ENDCASE.

       ASSIGN <value_x>(len_alt) TO <value_alt>.
       ASSIGN <value_x>(len_neu) TO <value_neu>.
       CLEAR value.
       <value_alt> = <record_old>+listfields-offset(len_alt).

The error is occurred because the len_alt's value is 0, but I don't know why this is happening...
What did I wrong? How can I solve this problem? I want to restrict the search help values for pa_pernr depending on the filled in pa_persa value.

Regards,
Robert

[former_member210541]

Data type mismatch

I can see PERNR in PA001 is of type PERSNO

and your internal table declaration

DATA: BEGIN OF lt_shout OCCURS 0,

         pernr TYPE pernr,

       END OF lt_shout.

the type PERNR refers to a structure PERNR.

Just make it  pernr TYPE pa001-pernr,

[Former Member]

Thanks that was the problem

[Former Member]

Agree with Tee Gee.

You must have ignored the Warning message in the syntax checker.Otherwise you would have spotted it.

Also not sure why you are using CALL FUNCTION 'DYNP_VALUES_READ'.

The data is already available in parameter pa_persa that can be used directly in the select statement.

R

[Former Member]

Well usually I just active it and in that case it did not show me any warnings, thanks for your advice.
I know I could use only pa_persa, but it is empty until I did not press the ENTER and  when I press the ENTER an error message appears that the pa_pernr is empty (obligatory).