> ## Documentation Index
> Fetch the complete documentation index at: https://developer.jtl-software.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Customer

> A customer: a person or a company that buys from the tenant. Name, postal address and contact data are the default billing address of the customer.



**Kind**: `object`

## Fields

**`id`**: `ID!`

The ID of the customer.

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**`number`**: `String!`

The customer number, unique within the tenant.

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**`debtorNumber`**: `Int`

The debtor number for accounting.

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**`customerGroupId`**: `ID!`

The customer group. It decides prices and discounts.

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**`customerCategoryId`**: `ID`

The customer category, a free grouping.

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**`customerPrintTextId`**: `ID`

The customer print text set that documents of this customer print. Empty when none is assigned.

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**`companyId`**: `ID`

The own company the customer belongs to. Empty means all companies.

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**`languageTag`**: `String`

The language of documents and messages as BCP 47 language tag, for example de or de-AT. Language subtag in lower case, region subtag in upper case. Wawi currently holds only the two-letter language subtag. Empty means the default language.

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**`billingAddress`**: `CustomerPostalAddress!`

The default billing address. Change it with 'UpdateCustomerAddress'.

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**`paymentTerms`**: `CustomerPaymentTerms!`

The payment terms.

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**`discountPercent`**: `Decimal!`

The discount of the customer in percent, 0 to 100.

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**`creditLimit`**: `Decimal`

The credit limit in the default currency of the tenant. Empty means no limit. A credit limit only warns when sales orders exceed it; it does not refuse them.

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**`isDunningBlocked`**: `Boolean!`

Whether dunning is blocked for the customer. Read-only here; change it with 'SetCustomerDunningBlock' and 'RemoveCustomerDunningBlock' of the dunning API.

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**`isBlocked`**: `Boolean!`

Whether the customer is blocked. Sales orders of a blocked customer are not picked and not delivered. Change it with 'BlockCustomer' and 'UnblockCustomer'.

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**`origin`**: `String`

Where the first contact came from, free text.

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**`birthDate`**: `DateTime`

The date of birth. Only the date part is used.

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**`website`**: `String`

The website.

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**`taxNumber`**: `String`

The tax number of the customer (not the VAT ID, which belongs to an address).

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**`commercialRegisterNumber`**: `String`

The commercial register number.

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**`customerSince`**: `DateTime!`

Since when the customer exists.

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**`changedAt`**: `DateTime`

When the customer or one of its parts was changed last.

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**`anonymizedAt`**: `DateTime`

When the customer was anonymized. Empty means not anonymized.