Need Rest API or Soap Service to fetch/Update Tax Registration Number in AR Customers

Summary:

Urgently need an API or webservice to update Registration Number under Manage Customers - > Sites - >Tax Profiles ->Tax Registrations as shown below... need to fecth or update values.

Content (please ensure you mask any confidential information):

i Tried to fetch from below API.

fscmRestApi/resources/11.13.18.05/taxRegistrations?q=PartyNumber=110323

But i get the Registration number as RegistrationNumber": "0107556000183" but in the UI the number is different as 9916268231.

Please help as the requirement is very urgent and need to fetch and update the values using APIs or Webservices.

Thanks,

Suhas

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