Hi Janice,
When you mention tax groups, I assume you are referring to UDC [H00/TV]. These tax groups never seemed to work within CSMS, in particular with Service Orders, at either the Item or Line Type levels. JDE hand entered SAR#5988281 to address this issue at the Line Type Level. However, the resulting ESU never seemed to fix the problem. I had initiated a call with JDE about this and they had opened up SAR#6358978 for me. In December 2002, they discontinued working on this and indicated they would reconsider this in the future. The reason for discontinuation doesn't make much sense to me, however, I had never pushed this, because my client had decided to go a different route. Hope this helps, but if you require clarification or assistance, please let me know.