Exam MB-310 topic 18 question 2 discussion

D. Create a state-specific settlement period and assign the US tax vendor to the settlement period.: User3 is unable to see payables for a specific state's sales tax liability. This suggests that the sales tax for that state is not properly linked to a settlement period for the configured US tax vendor. sales tax settlement periods determine when and how tax is settled and remitted. If a specific state's tax is not linked to its own settlement period, the system will not recognize it as payable during sales tax payment generation. By creating a state-specific settlement period and assigning the US tax vendor to it, you ensure that payables for that state's sales tax can be correctly tracked and settled.

we assign a settlement period to a tax code not assign a vendor tax to a settlement period !