Your query is not clear and needs further explanation.
- You say in billing freight is getting redetermined and transportation zone is not populating. Does it mean, transportation zone is flowing in sale order?
- Did you check in the Analysis screen from the condition tab of billing? If so, what was the message showing in that screen
- Is the Ship To is same as Sold To or different? If different, did you check in Ship To master data whether Transportation zone is maintained
- Did you check whether the condition record is maintained for the required combination with the current validity dates?
G. Lakshmipathi