> ## Documentation Index
> Fetch the complete documentation index at: https://help.maestra.io/llms.txt
> Use this file to discover all available pages before exploring further.
# How to Create a Custom Field
Custom fields are used to enter data that are not covered by the set of main fields.
To create a custom field, simply follow these steps
1. Go to **Integration settings** → **Custom fields**:
2. Click **Create custom field**:
3. Fill in the fields:
1. **Entity**: select the entity that your field will belong to. Entities include: Customer, Customer action, Touchpoint, Product, Product list item, Order, Promotion, Order line, Area, Discount card, and Prize.
**2. Name:** this name will be displayed in filter conditions.
**3. System name:** this will be used in imports and in the API.
4\. **Field type:**
* Integer: the field value must be an integer number, e.g., 123456
* String: the field value can be any string of up to 1,000 characters
* Boolean: true / false
* Decimal: e.g., 12345.67
* Date: e.g., 03/12/2021
* Date & time: e.g., 03/12/2021 04:30
* Enumerated: the field offers a drop-down list. For more details, see here
* Unique ID: one cannot sign up with the same ID twice
* Social network ID: this ID does not have to be unique and can be used more than once when signing up.
## How to merge (for the Integer and Decimal types):
**Take value from priority customer:** the inserted value will be taken from the higher-priority customer.
**Take greatest value:** the inserted value will be the highest of all the values available for the customer’s custom field.
# Additional settings
**Allow multiple values in a single field, separated by a "|" symbol in a .csv file:** you can enter multiple values in a single field.
**Erase previous data if field value is blank in new import:** the system removes field values if the field name is submitted but the field value is blank.
**Example:** Age is imported with a blank field value in a method or CustomFieldAge. If this entity is not imported, then the system will keep the previous value.
**Field is public:** the field can be requested or edited without applying a secret key.
**Create enum field value if the field value has not been found (for the Enumerated type):** the system will auto-add the new Enumeration value from the import file.
**Do not merge customers with different IDs (for the Unique ID type):** the system will not merge a new customer with their duplicate.
The system will replace the ID for the new customer. Thus, no history search will be available for the new customer.
4. Click **Create custom field:**
