---
title: "Update customer or find existing customer according to SearchMode"
method: POST
path: "/accounting/customers/update/"
tags: ["Accounting (Customers)"]
---

# Update customer or find existing customer according to SearchMode

`POST /accounting/customers/update/`

## Headers

- `Content-Language` unknown

## Request body

- AccountingCustomersCreateRequest
  - `Credentials` CoreAPICredentials, required
    - `CompanyID` integer, required — Company identifier
    - `APIKey` string, required — API key secret
  - `Details` AccountingTypedCustomer, required
    - `ID` integer, nullable — SUMIT identifier Leave empty to create a new entity or search by other fields when applicable
    - `Folder` string, nullable — Folder identifier. Can be either application folder name, or FolderID.
    - `Properties` object, nullable — Entity fields
    - `Name` string, nullable — Customer full name (or company name) Required for creating new customer (Leave empty to search by other fields)
    - `Phone` string, nullable — Customer phone number (Optional field)
    - `EmailAddress` string, nullable — Customer email address (Optional field)
    - `City` string, nullable — Customer city (Optional field)
    - `Address` string, nullable — Customer address (Optional field)
    - `ZipCode` string, nullable — Customer ZipCode (Optional field)
    - `CompanyNumber` string, nullable — Customer registered company number (VAT number) (Optional field)
    - `ExternalIdentifier` string, nullable — Customer external identifier. External identifier from calling application. Optional field
    - `NoVAT` boolean, nullable — NoVAT indication Set to true for VAT exempt customers Defaults to False
    - `SearchMode` 'Automatic (0)' | 'None (1)' | 'ExternalIdentifier (2)' | 'Name (3)' | 'CompanyNumber (4)' | 'Phone (5)' | 'EmailAddress (6)' — Customer searching mode

## Response `200`

OK

- ResponseAccountingCustomersUpdateResponse
  - `Status` 'Success (0)' | 'BusinessError (1)' | 'TechnicalError (2)'
  - `UserErrorMessage` string, nullable — Error message, in a user readable format
  - `TechnicalErrorDetails` string, nullable — Technical error details, let us know if you received this.
  - `Data` AccountingCustomersUpdateResponse
    - `CustomerID` integer — Customer number

---

[API](https://skmtc.net/myofficeguy/apis/sumit-api-full.md) · [All operations](https://skmtc.net/myofficeguy/apis/sumit-api-full/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/myofficeguy/sumit-api-full/versions/de2902289b3a/schema)