Chapter 4.2.4 - Nexus File
What is a Nexus file?
The Nexus file is a file used by Communications REST v2 to determine which states you have nexus in for Sales and Use transactions.
The Nexus file a list of states where you have nexus. Only US states can be used.
The Nexus file only applies to Sales and Use transactions. Telecom transactions are not affected by the Nexus file.
Creating the Nexus file
The Nexus file can be created manually. The file contains a list of abbreviated states.
Nexus files use a *.nex file extension.
For this example, the Exclusion file contains these states where you have nexus:
- North Carolina
KS MO NC WA CA
Using the Nexus file
The Nexus file is applied to a client profile. You must pass the associated
client_profile_id as part of the header to use the Nexus file.
Nothing special needs to be included in the transaction for the Nexus file to be applied. Simply run a transaction with the applicable
For example, California taxes are returned for this transaction, assuming a client profile is in use that has been updated with an Nexus file with CA included.
Requesting a new client profile or changes to an existing client profile
- Request the customization files and configurations. Attach existing customization files to the email
- Include the environment(s)
client_profile_idto be updated if changes are needed to an existing client profile