# EmployeeCustomFieldsByEmployerId List of employee custom fields for an employer __Activity name:__ GetEmployeeCustomFieldsByEmployerId Get the list of custom fields for all employees of an employer. This is a read-only table function. The Loket.nl REST API may not support changing the data, or the Invantive UniversalSQL driver for Loket.nl REST does not support it. In the latter case, use the table NativePlatformScalarRequests to upload data to the Loket.nl REST API. - Catalog: `LoketNlRest` - Schema: `Actuals` ## Parameters of Table Function | Name | Data Type | Required | Default Value | Documentation | |---|:---:|:---:|:---:|---| | `employerId` | `guid` | ☑ | | The unique identifier of the employer | | `referenceDate` | `datetime` | ☐ | | Set a reference date for choosing the date dependent data. | ## Columns The columns of the table `EmployeeCustomFieldsByEmployerId` are shown below. Each column has an SQL data type. | Name | Data Type | Label | Required | Documentation | |---|:---:|---|:---:|---| | `employeeCustomFields_customField_description` | `string(50)` | | ☐ | | | `employeeCustomFields_customField_id` | `guid` | | ☐ | The unique identifier of the custom field as defined at the employer level | | `employeeCustomFields_id` | `guid` | | ☐ | The unique identifier of an object (GUID/UUID) | | `employeeCustomFields_value` | `string(255)` | | ☐ | The value for the custom field for the employee | | `employmentId` | `guid` | Employment ID | ☐ | The unique identifier of an object (GUID/UUID) |