Symptoms

There are several scenarios that can occur with the "Address validation failed" error.

Case#1

During placing a Microsoft365 order, the process is failed on the Address validation step with the following message:

Case#2

Sales Order is failed with an error

"Service Creation Failed: Platform error #error_code #-1, extype_id #-1, module_id #, '500 Internal Server Error' received from 'POST https://O365AEH.cloud.local:443/o365app01/aps/tenants': Could not deserialize response

with error in the application sitelog

2021-07-14 14:28:49,513 <4616> [ 136] ERROR flow        : Error occurred during customer creation.
PartnerApiParsingException: Response: {"originalAddress":{"country":"IL","city":"Tel Aviv","state":"Tel Aviv","addressLine1":"01 Taversky","postalCode":"6711010"},"suggestedAddresses":[],"status":"None","validationMessage":"Address field invalid for property: 'City'"}, Base Description: Partner Exception:
Error Category: ResponseParsing
Service Error Payload: null
Context: Request Id: 20bd65bc-266a-445d-89af-2580530196e9, Correlation Id: fb52ed30-2ce0-4dcf-8a84-fb2e5ae6139d, Locale: en-US
Base Description: Microsoft.Store.PartnerCenter.Exceptions.PartnerResponseParseException: Could not deserialize response ---> Newtonsoft.Json.JsonReaderException: Unexpected character encountered while parsing value: {. Path '', line 1, position 1.
at Microsoft.Store.PartnerCenter.PartnerService.SynchronousExecute[T](Func`1 operation)
at Parallels.Office365.Gateway.ServiceProvider.PC.PcCustomerManager.ValidateAddress(CustomerArg customerArg, Address address) in C:\hudson\workspace\ps-apps_office365_release_20.1.1\O365-Web\src\ga

Cause

Since Microsoft365 v20.3.1 release, improved address validation is introduced to comply with the updated address validation API from the Microsoft side as released in the following article:

https://docs.microsoft.com/en-us/partner-center/announcements/2021-july#8

The new improved features support the validation update as it's is described in Microsoft 365 20.3.1 release notes

https://docs.cloudblue.com/cbc/services/microsoft365/20.3/content/Release-Notes-20.3.1/Improved-Address-Validation.htm