Check for duplicate customers

POST/api/v1/customers/check-duplicates

Check if a customer already exists using name, email, tax ID similarity.

Operation ID: check_duplicates_api_v1_customers_check_duplicates_post·View as markdown·OpenAPI slice

Authentication

Bearer token authentication. Pass your DayZero API token in the Authorization header and the target business UUID in x-business-id.

Parameters

Query

namestringrequired: Customer name to check
emailstring: Email to check
tax_idstring: Tax ID to check
exclude_idstring: Customer ID to exclude (for updates)

Responses

201Successful Response

Schema: SuccessEnvelope_DuplicateCheckResponse_

successboolean
messagestring
codestring
dataDuplicateCheckResponse

401Unauthorized - Authentication required

403Forbidden - Insufficient permissions

422Validation Error

Schema: HTTPValidationError

detailarray · ValidationErrorValidationError

5 fields

locarray · string | integerrequired
msgstringrequired
typestringrequired
inputobject
ctxobject

Code samples

POST/api/v1/customers/check-duplicates

bash

curl -X POST 'https://api.ondayzero.com/api/v1/customers/check-duplicates' \
  -H 'Authorization: Bearer dz_your_token' \
  -H 'x-business-id: YOUR_BUSINESS_ID'