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SAP EHS WWI & DataMatrix Barcode


Can anyone help with regards an issue we have in creating a DataMatrix barcode using WWI, specifically regarding the use of function codes.

We are using the Barcode library supplied by SAP (formerly TechniData product) which uses the 3rd party vendor barcode library Anex. The report symbol is configured as such (in Specify Secondary Value Determination for Report Symbols):

The %0 are the function codes.

The report symbol is configured in the WWI label template as: <02ZGLM_DMBC1[B:DM,DMODE=2,SSIZE=34,ROT=0,UNIT=0,VENDOR=Anex]>

The resulting r value would be for example: '%03101001900%0240SN01019/0190/P04%010X123456789'

The DataMatrix scans as '%03101001900%0240SN01019/0190/P04%010X123456789' using our Intermec CK71 scanner. We understand that the %0 at the start should be decoded as ]d2 and the other function codes as <GS>. The scanner reader however displays them as %0, not sure if we need to do some thing with the scanner settings.

If we create a GS1-128 linear barcode and use an online barcode decoder, it does decode it as '03101001900<GS>240SN01019/0190/P04<GS>10X123456789'

We therefore think the barcode is set up correctly. However our business user suggests the use of the %0 is incorrect according to his software supplier (the barcode is to be used for a warehouse management system). We have tried to advise that %0 is correct when using WWI and that is the reader that needs to decode it correctly.

I would appreciate any advice at all.

Thanks in advance


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2 Answers

  • Posted on Nov 23, 2012 at 08:25 AM

    Hi Karen,

    the mentioned barcode library does not support function codes for the DataMatrix barcode. The library supports function codes for PDF417 and EAN128.

    You can open a customer message to ask SAP to implement this function codes in the standard library as part of the standard support. In my point of view this is quite challenging as this seems to be not really a bug, but a misssing functionality. The official documentation does not say that function codes are supported. However the DataMatrix barcode is supporting function codes.

    ----------------- or ---------------------

    If the answer from the SAP support is "no" and maybe you are interested in a customer project to enhance the existing barcode library just let me know. There is no technical limitation to support those function codes.



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    • Former Member

      Hi Michael

      Thank you for your reply.

      We already have a customer message open, which is still ongoing. I will ask about how to implement the function codes.

      When you say 'The official documentation does not say that function codes are supported', which official documentation are you referring to? We have only the WwiBarcode manual that was supplied with the barcode library to refer to, so have probably misunderstand the capabilities. It has been frustrating trying to find out more.

      Best regards


  • Posted on Nov 23, 2012 at 09:38 AM

    Hi Karen,

    There is an alternative, use a DataMatrix font in your template.

    Otherwise, the project suggested by Mike looks like very interesting too.


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