ABAP Short Dump on append of a sorted table

Question

Why does my ABAP program short dump when I append a line to a sorted table?

ST22 Shows ITAB_ILLEGAL_SORT_ORDER

data: sorted_tab type sorted table of ty_tab with non-unique key key,
      line       type ty_tab.

line-key = 1. 
append line to sorted_tab.  "works fine" 

line-key = 2. 
append line to sorted_tab.  "works fine" 

line-key = 1. 
append line to sorted_tab.  "<==== Short dump here"

This seems like a stupid question - but I've just wasted enough time to find the answer to save the next person some grief. (Google was helpful, SAP help was not) — Esti, Oct 05 '09 at 06:09
good point - as if your table was declared with a unique key you would get yet another short dump — Esti, Oct 05 '09 at 22:33

Esti · Accepted Answer · 2009-10-05T22:32:40.617

The program short dumps when appending a sorted table in the wrong sort order

data: sorted_tab type sorted table of ty_tab with non-unique key key,
      line       type ty_tab.

line-key = 1.
append line to sorted_tab.  "works fine"

line-key = 2.
append line to sorted_tab.  "works fine"

line-key = 1.
append line to sorted_tab.  "<==== Short dump here"

Use INSERT in stead:

data: sorted_tab type sorted table of ty_tab with non-unique key key,
      line       type ty_tab.

line-key = 1.
insert line into table sorted_tab.  "works fine"

line-key = 2.
insert line into table sorted_tab.  "works fine"    

line-key = 1.
insert line into table sorted_tab.  "works fine"

Note If you had a UNIQUE key you would still get a short dump because you're using the same key twice

ABAP Short Dump on append of a sorted table

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