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[Flatron]

Gracias esterg por tus comentarios.

Dices que lo ponga así??

Así el problema que tengo es que siempre me coge el caso 2.
when 2. write: / 'No VBUK found. Check selection criteria...'.

tables: vbuk,vbap.

select-options: p_vbeln for vbuk-vbeln memory id aun obligatory.

parameters: posnr like vbap-posnr memory id pid.

**
*---- Variables --------------------------------------------------------
data: w_comwa like vbco6,
it_doc like vbfa occurs 0 with header line,
it_txt like dd07v occurs 0 with header line,
begin of it_type occurs 0,
vbtyp like vbuk-vbtyp,
text like dd07v-ddtext,
end of it_type.
*-----------------------------------------------------------------------
start-of-selection.
w_comwa-mandt = sy-mandt.
w_comwa-vbeln = p_vbeln.
w_comwa-posnr = posnr.
call function 'RV_ORDER_FLOW_INFORMATION'
exporting
comwa = w_comwa
tables
vbfa_tab = it_doc
exceptions
no_vbfa = 1
no_vbuk_found = 2
others = 3.
case sy-subrc.
when 1. write: / 'No VBFA found.'.
when 2. write: / 'No VBUK found. Check selection criteria...'.
when 3. write: / 'Unknown Error!'.
when 0. perform write_docs.
endcase.
*-----------------------------------------------------------------------
form write_docs.
call function 'GET_DOMAIN_VALUES'
exporting
domname = 'VBTYP'
tables
values_tab = it_txt
exceptions
no_values_found = 1
others = 2.
case sy-subrc.
when 1. write: / 'Warning: No texts found for Sales Docs types!'.
when 2. write: / 'Warning: Cannot retrieve SD types descriptions!'.
when 0. perform sort_texts.
endcase.

write: / 'Order Flow Information:'.
loop at it_doc.
write: / it_doc-stufe,
it_doc-vbelv,
it_doc-posnv.
perform write_type using it_doc-vbtyp_v.
write: it_doc-vbeln,
it_doc-posnn.
perform write_type using it_doc-vbtyp_n.
write: it_doc-matnr,
it_doc-rfmng unit it_doc-meins,
it_doc-meins.
endloop.
endform.
*-----------------------------------------------------------------------
form sort_texts.
loop at it_txt.
it_type-vbtyp = it_txt-domvalue_l.
it_type-text = it_txt-ddtext.
append it_type.
clear it_type.
endloop.
sort it_type.
endform.
*-----------------------------------------------------------------------
form write_type using value(p_vbtyp) like vbuk-vbtyp.
data w_txt(30) type c.
read table it_type with key vbtyp = p_vbtyp binary search.
case sy-subrc.
when 0. w_txt = it_type-text.
when others. w_txt = '?'.
endcase.
write w_txt intensified off.
endform.