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reference characteristic document type VBAK AUART

A reference characteristic worked fine for years.  One day we saw unexpected behavior on 2 orders on one specific date.

The dependency simply uses VBAK-AUART to check on order type 'TA  ' for a sales order type of OR.

     $root.vbak_auart eq 'TA  '

'TA  ' relates to an order type of OR based on table TAUUM - 'TA  ' is language independent so that is why it was used.  It's worked for years.

   It would look like this under Environment > change documents;

     imgur: the simple image sharer

2 sales orders on 2014-05-08 apparently CONVERSION_EXIT_AUART_OUTPUT CONVERSION_EXIT_AUART_INPUT didn't trigger to send 'TA  ' to the dependency, so it used OR instead (pictured below).  All other orders over the years show TA.  Interesting only 2 orders ever did this over 4 years of usage.  Everything is returning 'TA  ' today too.

Order creation example of those 2 under change documents inside of the configuration

http://imgur.com/OYqWehL

The user changed the order several days later and it did use TA.  No changes to VC were done.  We didn't know this happened yet.

Final change;

http://imgur.com/BOKOA0i

A few months after that it was noticed. 

I guess the moral of the story is to expect the unexpected and we should have used TA and OR, but I'm a little perplexed as to why TA didn't get sent at least initially. 

The revised dependency will catch that situation if it ever happens again, but that behavior was very odd;

imgur: the simple image sharer

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