Remove invalid charters in your BW transformation

If you have in your BW regular flat-file data load in your BW system, you probably afflict issues with wrong data provided by the user. The scenario of this issue can be very simple. It’s enough than user provides invalid unsupported charter and during activation, you will get similar issue:

Or other issues like:

  • Value ‚#’ (hex. ‚2300’) of characteristic  contains invalid characters
  • Error when assigning SID: Action VAL_SID_CONVERT InfoObject
  • (hex. ‚500072007A0065006C006500770020006E0061002000720061’) of characteristic  contains inva

This issue also affects me in the last time, and during my research and found several options for removal. Most of them were based on a simple check like is your charter on the list:

!”%&”()*+,-./:;<=>?_0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ

And this is, of course, true and corresponds to the note 173241. But what if you additionally want to check charters provided in the transaction RSKC?

The best way to achieve this is the usage of good FM RSKC_CHAVL_OF_IOBJ_CHECK, which checks charter correctness according to info object. But by default, this is not a dynamic development. I want to have some dynamic code, which I can paste in every transformation after Datasource and make necessary checks. That’s why I decided to write my own implementation which can handle this issue.

My implementation

Now all I need to do is add following code like below to the end routine ( consider a move of reference declaration to proper place ):

Now any unsupported charter will be simply replaced by nothing.

Download

You can test this by yourself by getting code from my GitHub page:

https://github.com/pawelwiejkut/bw_remove_charters

Of course please feel free to contribute and create pull requests, or open issues if needed. In the case of AMDP routine, consider usage https://blogs.sap.com/2017/06/15/removing-invalid-and-non-printable-characters-in-hana-based-bw-transformation/.

Thanks for your time and have a great day.

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