# PUT /api/v1/voice_agent_fields/:id Update AI Field by id.
## Params
| Param name | Description
**Validations** |
|------------------------|--------------------------------------------------------------------------|
| **key**
OptionalBlank Value Allowed | Key
**Validations:**
- Must be a String |
| **key_type**
OptionalBlank Value Allowed | Key Type
**Validations:**
- Must be a String |
| **key_name**
OptionalBlank Value Allowed | Key Name
**Validations:**
- Must be a String |
| **question_template**
OptionalBlank Value Allowed | Question
**Validations:**
- Must be a String |
| **allowed_values**
OptionalBlank Value Allowed | Allowed Values
**Validations:**
- Must be a String |
| **min_length**
OptionalBlank Value Allowed | Min Length
**Validations:**
- Must be a decimal number. |
| **max_length**
OptionalBlank Value Allowed | Max Length
**Validations:**
- Must be a decimal number. |
| **prompt**
OptionalBlank Value Allowed | Prompt
**Validations:**
- Must be a String |