AvalaraAvalaraDeveloperDeveloper
  • Productsdown arrow
      Calculations
      AvaTax
      AvaTax Brazil
      AvaTax for Communications
      AvaTax for Excise
      Avalara Tax Content
      E-invoicing
      Activation Service
      Avalara E-Invoicing and Live Reporting
      Brazil
      Brazil Customer Portal
      Tax Compliance (Brazil)
      Tax Central
      Data Staging
      Returns
      Avalara Managed Returns API
      MyLodgeTax
      Avalara Returns Excise
      VAT Reporting
      Shared service
      Shared Services
      1099 & W-9
      Avalara 1099 & W-9
      Tax registrations and business licenses
      Avalara License Guidance
      Sales Tax Registrations
      Payroll tax registrations
      Avalara license filings
      ECM
      Exemption Certificate Management
      Avalara Cross-Border
      Automated Tariff Code Classification
      Self-Serve Tariff Code Classification
      Managed and Premium Tariff Code Classification
      AvaTax Cross-Border (Estimator + Calculator)
      Avalara Trade Compliance
      Avalara Trade and Tariff Library
  • Learndown arrow
      Integrations guides
      Refactor guides
      Get certified
  • Get starteddown arrow
      AvaTax 90 days free trial
      Playground
      Become a partner
      Build with Avalara using AI
  • Developdown arrow
      APIs
      SDKs
      MCPs
      Agent to Agent (A2A)
      AI use cases
      API versioning
  • Resourcesdown arrow
      Avalara NEXT recordings
      Avalara University
      Knowledge Center
  • Support
MENU
Search Icon

No results found for

Profile
  • Sign In
Sign In
Search Icon

No results found for

  • Productsdown arrow
      Calculations
      AvaTax
      AvaTax Brazil
      AvaTax for Communications
      AvaTax for Excise
      Avalara Tax Content
      E-invoicing
      Activation Service
      Avalara E-Invoicing and Live Reporting
      Brazil
      Brazil Customer Portal
      Tax Compliance (Brazil)
      Tax Central
      Data Staging
      Returns
      Avalara Managed Returns API
      MyLodgeTax
      Avalara Returns Excise
      VAT Reporting
      Shared service
      Shared Services
      1099 & W-9
      Avalara 1099 & W-9
      Tax registrations and business licenses
      Avalara License Guidance
      Sales Tax Registrations
      Payroll tax registrations
      Avalara license filings
      ECM
      Exemption Certificate Management
      Avalara Cross-Border
      Automated Tariff Code Classification
      Self-Serve Tariff Code Classification
      Managed and Premium Tariff Code Classification
      AvaTax Cross-Border (Estimator + Calculator)
      Avalara Trade Compliance
      Avalara Trade and Tariff Library
  • Learndown arrow
      Integrations guides
      Refactor guides
      Get certified
  • Get starteddown arrow
      AvaTax 90 days free trial
      Playground
      Become a partner
      Build with Avalara using AI
  • Developdown arrow
      APIs
      SDKs
      MCPs
      Agent to Agent (A2A)
      AI use cases
      API versioning
  • Resourcesdown arrow
      Avalara NEXT recordings
      Avalara University
      Knowledge Center
  • Support
Profile
  • Sign In
Sign In
Sales (877) 282-5585
API Patch Notes
Avalara API 23.4.1 Patch Notes
Avalara API 23.4.1 Patch Notes
Avalara API 23.4.1 Patch Notes
Avalara API 23.2.0 Patch Notes
Avalara API 23.1.0 Patch Notes
Avalara API 22.11.0 Patch Notes
Avalara API 22.10.0 Patch Notes
Avalara API 22.8.0 Patch Notes
Avalara API 22.7.0 Patch Notes
Avalara API 22.6.0 Patch Notes
Avalara API 22.5.0 Patch Notes
Avalara API 22.3.0 Patch Notes
Avalara API 22.02.1 Patch Notes
Avalara API 22.02.0 Patch Notes
Avalara API 21.12.0 Patch Notes
Avalara API 21.4.0 Patch Notes
Avalara API 21.3.1 Patch Notes
AvaTax 21.3.0 Patch Notes
AvaTax 21.1.1 Patch Notes
Avalara API 20.12.1 Patch Notes
Avalara API 20.5 Patch Notes
Avalara API 20.4 Patch Notes
Avalara API 20.3 Patch Notes
AvaTax API 20.1 Patch Notes
AvaTax API 19.12 Patch Notes
AvaTax API 19.10 Patch Notes
AvaTax API 19.7 Patch Notes
AvaTax API 19.6 Patch Notes
AvaTax API 19.4 Patch Notes
AvaTax API 19.3 Patch Notes
AvaTax API 19.2 Patch Notes
AvaTax API 17.6 Patch Note

AvaTax API 20.1 Patch Notes

This article is about the January 2020 monthly update to the AvaTax API.

ENVIRONMENTURLRELEASE DATE
Sandboxhttps://sandbox-rest.avatax.com2020-01-27                                                                        
Productionhttps://rest.avatax.com2020-01-30    

Sandbox testing window

The AvaTax release schedule includes a preview period during which time the latest software is available for integration testing in the AvaTax Sandbox Environment two weeks before launching to production. If your engineering team would like a sandbox account for integration testing purposes:

  • Development and Solutions Partners (DSP), please contact your Business Development Manager.
  • Avalara customers, please contact your Customer Account Manager or open a support ticket.

Locations API improvements

  • Added new marketplace locations definitions API to list system suggested locations for a marketplace
  • Added new API to support expiration and creation of a company location
  • Updated the company location APIs to prevent date range overlap for company locations with the same location code

Transaction bug fixes

  • Fixed unavailability of Taxable Units in tax details of REST response
  • Fixed generic 500 error if user attempts to use ListErrorTransactions with an unknown filter
  • Added Amount, Datasource, ShipToCountry, and ShipToRegion fields to ListErrorTransactions API
  • Added functionality for transactions to support Basic Returns subscription only

  • Added Amusement, Hospitality, RentalLeasing to taxTypeGroups
  • Updated EWaste tab name to Recycling in taxTypeGroups
  • Added deployment to AWSCQA from GitLab CI
  • Added custom rules determination factor to InspectLine API
  • Fixed the duration and storage for LocalJurisdictionFetchCache
  • Resolved missing error body text issue from Internal and Remote server errors
  • Fixed TaxAddressError for non-US addresses that also include geocode coordinates
  • Updated documentation to clearly state one exposure zone per certificate
  • Added support for OutOfHarbor TaxOverrideType
Knowledge CenterDeveloper Support
Avalara.com|Terms of Use|Privacy Policy
© 2026 Avalara, Inc.