Retrieving the default field name used for contact deduplication in Zoho Desk requires a single authenticated GET request to the contacts deduplication API endpoint — no request body needed.
Why this matters
When building integrations or admin tooling on top of Zoho Desk, you often need to know which field the system is currently using as the deduplication key for contacts before you attempt a merge or list duplicate records. Fetching this value programmatically lets your code adapt dynamically rather than hard-coding assumptions about field configuration. This is especially useful before calling related endpoints such as listing duplicate contacts or their details.
Step-by-step
Step 1. Confirm you have a valid Zoho Desk API credential (OAuth 2.0 token) with sufficient scope to read deduplication settings. All requests to the Zoho Desk REST API must include an Authorization: Zoho-oauthtoken <your_token> header.
Step 2. Send a GET request to the following endpoint on your Zoho Desk portal:
GET /api/v1/contactsDeduplication/defaultFieldNameThis operation is identified internally as getnameofdefaultfield and accepts an optional query-parameter dictionary (p) if you need to pass portal-specific parameters.[2]
Step 3. In Python, if you are using a wrapper client, the call looks like this:
response = client.get_name_of_default_field(p=None)
print(response)The method issues a GET to /api/v1/contactsDeduplication/defaultFieldName with no request body.[2]
Step 4. Parse the response. The returned payload will contain the name of the field currently configured as the default for contact deduplication. Store or log this value so downstream logic — such as listing duplicate contacts via GET /api/v1/contactsDeduplication — can reference the correct field.[5]
Step 5. If you also manage account deduplication, a parallel endpoint exists:
GET /api/v1/accountsDeduplication/defaultFieldNameThis operation (getdefaultfield_name) follows the same pattern and likewise accepts an optional p parameter.[3]
Step 6. If you need to change the default field rather than just read it, use the POST variant of the same contacts endpoint:
POST /api/v1/contactsDeduplication/defaultFieldNameThis operation (createsetdefaultfieldfor_contact) accepts both a data dictionary (the new field configuration) and an optional p dictionary.[1] The equivalent for accounts is POST /api/v1/accountsDeduplication/defaultFieldName.[4]
Common pitfalls
- Confusing contacts vs. accounts endpoints. The contacts path is
/api/v1/contactsDeduplication/defaultFieldNameand the accounts path is/api/v1/accountsDeduplication/defaultFieldName.[2][3] Mixing them up will return the wrong default field or a 404. - Using POST when you only want to read. A
POSTto the same URL will overwrite the current default field, not retrieve it.[1] Always useGETfor read-only inspection. - Missing portal context. If your client requires a portal identifier passed via the
pparameter, omitting it may result in an authentication or routing error. Check your client's initialisation to ensure the portal domain is set correctly before making the call.[2] - Duplicate listing without knowing the field. Calling
GET /api/v1/contactsDeduplicationto list duplicate contacts without first confirming the default field can produce confusing results if the field has been changed since your last check.[5]
What to check
- Verify the response from
GET /api/v1/contactsDeduplication/defaultFieldNamereturns the field name you expect (e.g., email) before triggering any merge workflows.[2] - Confirm that the same field is consistently configured for both contacts and accounts if your process spans both record types, using the respective
GETendpoints.[2][3] - After any
POSTto update the default field, re-run theGETto confirm the change was persisted correctly before relying on it in production.[1][2]
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*Beam Help is an independent expert support resource for Zoho products and is not official Zoho support. Always validate API behaviour against your specific Zoho Desk plan and data centre region.*