Hi Chris,
I think you are talking about the configuration settings in the ERP system, and I don't think that there is a problem in that area. I agree that the system "translates" the Order Types into the native German codes, but you don't need to be concerned about it. Those settings merely control transfer or not of the data to GTS. And you've confirmed that your data IS being transferred, so the problem is somewhere else.
The control of the compliance checks is in the assignment of the GTS Item Categories to the compliance area. Probably you have GTS Item Category EXORD1 assigned to the Embargo check, and you know that it's working ok (for your primary feeder system). So the problem must be that your ERP Item Category TAN is not correctly assigned to GTS Item Category EXORD1. Since those assignments are either at System or Group level, you should confirm again that they are correct. Apologies if you've already done so, but I could not quite understand that from your last reply.
Regards,
Dave