I believe the error correcting code ECC200 is in the Data Matrix barcode in release 11.3. It would make sense to get on the latest patch level for 11.3 before beginning. Also, for testing purposes, I would suggest getting a handheld scanner that supports Data Matrix barcodes.
A cheaper solution for testing the output is to use a web cam (± $30) and a barcode app on a smart phone, tablet or laptop. I use "BarcodeReader" from Typhoon System, a free Windows 8 app, and it does the trick. Beware, some apps can only read lower ASCII (0-128) characters. I our case, as we need to encore French characters, that was a big issue.
And you do need to get at least to patch level 15; we found a bug that was fixed in that release.