How can a simple statement like this one:
SELECT SINGLE * FROM tbl_smt INTO ls_smt
WHERE field = p_field.
<b>always</b> return sy-subrc = 4 ?
p_field is declared <i>like tbl_smt-field</i>
and is in fact a CHAR of length 30.
tbl_smt contains a few lines with data.
p_field is not a key field.