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# Resource: Custom Field Applications

# Type: Custom Field Application Object

# Link: https://dev.wix.com/docs/api-reference/crm/members-contacts/members/member-management/custom-fields/custom-field-applications/custom-field-application-object.md

## Description: A custom field application defines which members or entities a custom field applies to.
By default, custom fields apply to all members. However, custom field applications allow you to target
specific members, roles, badges, or pricing plans, or exclude certain entities.

## Schema:

```json
 Type: Custom Field Application Object | type: CustomFieldApplication
 Description: A custom field application defines which members or entities a custom field applies to.
By default, custom fields apply to all members. However, custom field applications allow you to target
specific members, roles, badges, or pricing plans, or exclude certain entities.
       - name: customFieldId  | type: string | description: Custom field ID.
           - name: value  | type: string | description: 
       - name: customFieldKey  | type: string | description: Custom field key.
       - name: applications  | type: ApplicationsWrapper | description: Entities to which the custom field applies.
           - name: items  | type: Array<AppliesTo> | description: List of up to 100 entities to which the the custom field applies.
               - name: applicationType  | type: string | description: Type of the application.
               - name: entityId  | type: string | description: Entity ID.
       - name: exclusions  | type: ExclusionsWrapper | description: Entities from which the custom field is excluded.
           - name: items  | type: Array<Exclusion> | description: List of up to 100 entities from which the custom field is excluded.
               - name: exclusionType  | type: string | description: Type of the exclusion.
               - name: entityId  | type: string | description: Entity ID.
       - name: revision  | type: string | description: Revision number, which increments by 1 each time the custom field is updated. To prevent conflicting changes, the existing revision must be used when updating a custom field.
           - name: value  | type: number | description: 

```