Hi Jos,
You are right. I misunderstood your question. But the DiscRel can be updated through DTW if you use below sample:
| CardCode | EffectiveDiscount |
| CardCode | EffectiveDiscount |
| C1000 | dgrAverageDiscount |
| C1001 | dgrLowestDiscount |
| C1002 | dgrHighestDiscount |
| C1003 | dgrDiscountTotals |
In the DTW you can select this target field in step 5:
Hope to be of service.
Kind regards,
Andy