---
title: Finalize a public form attachment
description: Verifies the exact private Blob object reserved by a form
  submission and attaches it to the ticket. The client submission and attachment
  UUIDs are required to prove possession of the reservation.
type: api-reference
source: ./openapi/inth-api.json
method: post
path: /v1/forms/{type}/attachments/{attachmentId}/finalize
operationId: finalizePublicFormAttachment
server: https://api.inth.com
apiVersion: 1.0.0
tags:
  - Forms
canonicalUrl: https://inth.com/docs/api/rest-api/forms/finalize-public-form-attachment
lastModified: "2026-09-01T00:39:09.538Z"
---
```http
POST /v1/forms/{type}/attachments/{attachmentId}/finalize
```

Server: `https://api.inth.com`

Operation ID: `finalizePublicFormAttachment`

## Request

### Path Parameters

|Name|Type|Required|Description|
|:--|:--|:--|:--|
|`type`|"support" \|"sales" \|"feedback" \|"feature\_request"|required||
|`attachmentId`|string|required||

### Request Body

required

Content type: application/json

|Property|Type|Required|Description|
|:--|:--|:--|:--|
|`clientAttachmentId`|string (uuid)|required||
|`clientSubmissionId`|string (uuid)|required||

JSON Schema:

```json
{
  "type": "object",
  "additionalProperties": false,
  "required": [
    "clientAttachmentId",
    "clientSubmissionId"
  ],
  "properties": {
    "clientAttachmentId": {
      "type": "string",
      "format": "uuid"
    },
    "clientSubmissionId": {
      "type": "string",
      "format": "uuid"
    }
  }
}
```

## Code Examples

### cURL

```bash
curl -X POST "https://api.inth.com/v1/forms/support/attachments/{attachmentId}/finalize" \
  -H "Content-Type: application/json" \
  -d '{
  "clientAttachmentId": "123e4567-e89b-12d3-a456-426614174000",
  "clientSubmissionId": "123e4567-e89b-12d3-a456-426614174000"
}'
```

### JavaScript

```ts
const response = await fetch("https://api.inth.com/v1/forms/support/attachments/{attachmentId}/finalize", {
  method: "POST",
  headers: {
    "Content-Type": "application/json"
  },
  body: JSON.stringify({
    "clientAttachmentId": "123e4567-e89b-12d3-a456-426614174000",
    "clientSubmissionId": "123e4567-e89b-12d3-a456-426614174000"
  }),
});
const data = await response.json();
```

## Responses

### 200

Attachment verified and attached to the ticket.

Content type: application/json

|Property|Type|Required|Description|
|:--|:--|:--|:--|
|`success`|boolean|required||
|`data`|object|required||
|`data.attachmentId`|string|required||
|`data.status`|string|required||

Example:

```json
{
  "success": true,
  "data": {
    "attachmentId": "string",
    "status": "string"
  }
}
```

JSON Schema:

```json
{
  "type": "object",
  "required": [
    "success",
    "data"
  ],
  "properties": {
    "success": {
      "type": "boolean",
      "const": true
    },
    "data": {
      "type": "object",
      "required": [
        "attachmentId",
        "status"
      ],
      "properties": {
        "attachmentId": {
          "type": "string",
          "pattern": "^sat_[1-9a-km-z]+$"
        },
        "status": {
          "type": "string",
          "const": "ready"
        }
      }
    }
  }
}
```

### 400

The request payload or parameters are invalid.

Content type: application/json

|Property|Type|Required|Description|
|:--|:--|:--|:--|
|`success`|boolean|required||
|`error`|object|required||
|`error.code`|"UNAUTHORIZED" \|"FORBIDDEN" \|"INSTANCE\_LIMIT\_REACHED" \|"PLAN\_LIMIT\_REACHED" \|"PLAN\_REQUIRED" \|"INVALID\_ORIGIN" \|"INVALID\_REGION" \|"INVALID\_PAYLOAD" \|"NOT\_FOUND" \|"CONFLICT" \|"KEY\_LIMIT\_REACHED" \|"PAYLOAD\_TOO\_LARGE" \|"RATE\_LIMITED" \|"SERVICE\_UNAVAILABLE" \|"INTERNAL\_ERROR"|required||
|`error.message`|string|required||
|`error.details`|unknown|optional|Optional structured error details.|

Example: default

```json
{
  "success": false,
  "error": {
    "code": "INVALID_PAYLOAD",
    "message": "Invalid request payload",
    "details": [
      {
        "code": "too_small",
        "message": "Too small: expected string to have >=1 characters",
        "path": [
          "name"
        ]
      }
    ]
  }
}
```

JSON Schema:

```json
{
  "type": "object",
  "required": [
    "success",
    "error"
  ],
  "properties": {
    "success": {
      "type": "boolean",
      "const": false
    },
    "error": {
      "type": "object",
      "required": [
        "code",
        "message"
      ],
      "properties": {
        "code": {
          "type": "string",
          "enum": [
            "UNAUTHORIZED",
            "FORBIDDEN",
            "INSTANCE_LIMIT_REACHED",
            "PLAN_LIMIT_REACHED",
            "PLAN_REQUIRED",
            "INVALID_ORIGIN",
            "INVALID_REGION",
            "INVALID_PAYLOAD",
            "NOT_FOUND",
            "CONFLICT",
            "KEY_LIMIT_REACHED",
            "PAYLOAD_TOO_LARGE",
            "RATE_LIMITED",
            "SERVICE_UNAVAILABLE",
            "INTERNAL_ERROR"
          ]
        },
        "message": {
          "type": "string"
        },
        "details": {
          "description": "Optional structured error details."
        }
      }
    }
  }
}
```

### 403

The authenticated principal cannot access the resource.

Content type: application/json

|Property|Type|Required|Description|
|:--|:--|:--|:--|
|`success`|boolean|required||
|`error`|object|required||
|`error.code`|"UNAUTHORIZED" \|"FORBIDDEN" \|"INSTANCE\_LIMIT\_REACHED" \|"PLAN\_LIMIT\_REACHED" \|"PLAN\_REQUIRED" \|"INVALID\_ORIGIN" \|"INVALID\_REGION" \|"INVALID\_PAYLOAD" \|"NOT\_FOUND" \|"CONFLICT" \|"KEY\_LIMIT\_REACHED" \|"PAYLOAD\_TOO\_LARGE" \|"RATE\_LIMITED" \|"SERVICE\_UNAVAILABLE" \|"INTERNAL\_ERROR"|required||
|`error.message`|string|required||
|`error.details`|unknown|optional|Optional structured error details.|

Example:

```json
{
  "success": true,
  "error": {
    "code": "UNAUTHORIZED",
    "message": "string",
    "details": {}
  }
}
```

JSON Schema:

```json
{
  "type": "object",
  "required": [
    "success",
    "error"
  ],
  "properties": {
    "success": {
      "type": "boolean",
      "const": false
    },
    "error": {
      "type": "object",
      "required": [
        "code",
        "message"
      ],
      "properties": {
        "code": {
          "type": "string",
          "enum": [
            "UNAUTHORIZED",
            "FORBIDDEN",
            "INSTANCE_LIMIT_REACHED",
            "PLAN_LIMIT_REACHED",
            "PLAN_REQUIRED",
            "INVALID_ORIGIN",
            "INVALID_REGION",
            "INVALID_PAYLOAD",
            "NOT_FOUND",
            "CONFLICT",
            "KEY_LIMIT_REACHED",
            "PAYLOAD_TOO_LARGE",
            "RATE_LIMITED",
            "SERVICE_UNAVAILABLE",
            "INTERNAL_ERROR"
          ]
        },
        "message": {
          "type": "string"
        },
        "details": {
          "description": "Optional structured error details."
        }
      }
    }
  }
}
```

### 404

The requested resource was not found.

Content type: application/json

|Property|Type|Required|Description|
|:--|:--|:--|:--|
|`success`|boolean|required||
|`error`|object|required||
|`error.code`|"UNAUTHORIZED" \|"FORBIDDEN" \|"INSTANCE\_LIMIT\_REACHED" \|"PLAN\_LIMIT\_REACHED" \|"PLAN\_REQUIRED" \|"INVALID\_ORIGIN" \|"INVALID\_REGION" \|"INVALID\_PAYLOAD" \|"NOT\_FOUND" \|"CONFLICT" \|"KEY\_LIMIT\_REACHED" \|"PAYLOAD\_TOO\_LARGE" \|"RATE\_LIMITED" \|"SERVICE\_UNAVAILABLE" \|"INTERNAL\_ERROR"|required||
|`error.message`|string|required||
|`error.details`|unknown|optional|Optional structured error details.|

Example:

```json
{
  "success": true,
  "error": {
    "code": "UNAUTHORIZED",
    "message": "string",
    "details": {}
  }
}
```

JSON Schema:

```json
{
  "type": "object",
  "required": [
    "success",
    "error"
  ],
  "properties": {
    "success": {
      "type": "boolean",
      "const": false
    },
    "error": {
      "type": "object",
      "required": [
        "code",
        "message"
      ],
      "properties": {
        "code": {
          "type": "string",
          "enum": [
            "UNAUTHORIZED",
            "FORBIDDEN",
            "INSTANCE_LIMIT_REACHED",
            "PLAN_LIMIT_REACHED",
            "PLAN_REQUIRED",
            "INVALID_ORIGIN",
            "INVALID_REGION",
            "INVALID_PAYLOAD",
            "NOT_FOUND",
            "CONFLICT",
            "KEY_LIMIT_REACHED",
            "PAYLOAD_TOO_LARGE",
            "RATE_LIMITED",
            "SERVICE_UNAVAILABLE",
            "INTERNAL_ERROR"
          ]
        },
        "message": {
          "type": "string"
        },
        "details": {
          "description": "Optional structured error details."
        }
      }
    }
  }
}
```

### 409

The request conflicts with the current resource state.

Content type: application/json

|Property|Type|Required|Description|
|:--|:--|:--|:--|
|`success`|boolean|required||
|`error`|object|required||
|`error.code`|"UNAUTHORIZED" \|"FORBIDDEN" \|"INSTANCE\_LIMIT\_REACHED" \|"PLAN\_LIMIT\_REACHED" \|"PLAN\_REQUIRED" \|"INVALID\_ORIGIN" \|"INVALID\_REGION" \|"INVALID\_PAYLOAD" \|"NOT\_FOUND" \|"CONFLICT" \|"KEY\_LIMIT\_REACHED" \|"PAYLOAD\_TOO\_LARGE" \|"RATE\_LIMITED" \|"SERVICE\_UNAVAILABLE" \|"INTERNAL\_ERROR"|required||
|`error.message`|string|required||
|`error.details`|unknown|optional|Optional structured error details.|

Example:

```json
{
  "success": true,
  "error": {
    "code": "UNAUTHORIZED",
    "message": "string",
    "details": {}
  }
}
```

JSON Schema:

```json
{
  "type": "object",
  "required": [
    "success",
    "error"
  ],
  "properties": {
    "success": {
      "type": "boolean",
      "const": false
    },
    "error": {
      "type": "object",
      "required": [
        "code",
        "message"
      ],
      "properties": {
        "code": {
          "type": "string",
          "enum": [
            "UNAUTHORIZED",
            "FORBIDDEN",
            "INSTANCE_LIMIT_REACHED",
            "PLAN_LIMIT_REACHED",
            "PLAN_REQUIRED",
            "INVALID_ORIGIN",
            "INVALID_REGION",
            "INVALID_PAYLOAD",
            "NOT_FOUND",
            "CONFLICT",
            "KEY_LIMIT_REACHED",
            "PAYLOAD_TOO_LARGE",
            "RATE_LIMITED",
            "SERVICE_UNAVAILABLE",
            "INTERNAL_ERROR"
          ]
        },
        "message": {
          "type": "string"
        },
        "details": {
          "description": "Optional structured error details."
        }
      }
    }
  }
}
```

### 413

The request body exceeds the 1 MB limit.

Content type: application/json

|Property|Type|Required|Description|
|:--|:--|:--|:--|
|`success`|boolean|required||
|`error`|object|required||
|`error.code`|"UNAUTHORIZED" \|"FORBIDDEN" \|"INSTANCE\_LIMIT\_REACHED" \|"PLAN\_LIMIT\_REACHED" \|"PLAN\_REQUIRED" \|"INVALID\_ORIGIN" \|"INVALID\_REGION" \|"INVALID\_PAYLOAD" \|"NOT\_FOUND" \|"CONFLICT" \|"KEY\_LIMIT\_REACHED" \|"PAYLOAD\_TOO\_LARGE" \|"RATE\_LIMITED" \|"SERVICE\_UNAVAILABLE" \|"INTERNAL\_ERROR"|required||
|`error.message`|string|required||
|`error.details`|unknown|optional|Optional structured error details.|

Example:

```json
{
  "success": true,
  "error": {
    "code": "UNAUTHORIZED",
    "message": "string",
    "details": {}
  }
}
```

JSON Schema:

```json
{
  "type": "object",
  "required": [
    "success",
    "error"
  ],
  "properties": {
    "success": {
      "type": "boolean",
      "const": false
    },
    "error": {
      "type": "object",
      "required": [
        "code",
        "message"
      ],
      "properties": {
        "code": {
          "type": "string",
          "enum": [
            "UNAUTHORIZED",
            "FORBIDDEN",
            "INSTANCE_LIMIT_REACHED",
            "PLAN_LIMIT_REACHED",
            "PLAN_REQUIRED",
            "INVALID_ORIGIN",
            "INVALID_REGION",
            "INVALID_PAYLOAD",
            "NOT_FOUND",
            "CONFLICT",
            "KEY_LIMIT_REACHED",
            "PAYLOAD_TOO_LARGE",
            "RATE_LIMITED",
            "SERVICE_UNAVAILABLE",
            "INTERNAL_ERROR"
          ]
        },
        "message": {
          "type": "string"
        },
        "details": {
          "description": "Optional structured error details."
        }
      }
    }
  }
}
```

### 500

An unexpected internal error occurred.

Content type: application/json

|Property|Type|Required|Description|
|:--|:--|:--|:--|
|`success`|boolean|required||
|`error`|object|required||
|`error.code`|"UNAUTHORIZED" \|"FORBIDDEN" \|"INSTANCE\_LIMIT\_REACHED" \|"PLAN\_LIMIT\_REACHED" \|"PLAN\_REQUIRED" \|"INVALID\_ORIGIN" \|"INVALID\_REGION" \|"INVALID\_PAYLOAD" \|"NOT\_FOUND" \|"CONFLICT" \|"KEY\_LIMIT\_REACHED" \|"PAYLOAD\_TOO\_LARGE" \|"RATE\_LIMITED" \|"SERVICE\_UNAVAILABLE" \|"INTERNAL\_ERROR"|required||
|`error.message`|string|required||
|`error.details`|unknown|optional|Optional structured error details.|

Example: default

```json
{
  "success": false,
  "error": {
    "code": "INTERNAL_ERROR",
    "message": "Internal server error"
  }
}
```

JSON Schema:

```json
{
  "type": "object",
  "required": [
    "success",
    "error"
  ],
  "properties": {
    "success": {
      "type": "boolean",
      "const": false
    },
    "error": {
      "type": "object",
      "required": [
        "code",
        "message"
      ],
      "properties": {
        "code": {
          "type": "string",
          "enum": [
            "UNAUTHORIZED",
            "FORBIDDEN",
            "INSTANCE_LIMIT_REACHED",
            "PLAN_LIMIT_REACHED",
            "PLAN_REQUIRED",
            "INVALID_ORIGIN",
            "INVALID_REGION",
            "INVALID_PAYLOAD",
            "NOT_FOUND",
            "CONFLICT",
            "KEY_LIMIT_REACHED",
            "PAYLOAD_TOO_LARGE",
            "RATE_LIMITED",
            "SERVICE_UNAVAILABLE",
            "INTERNAL_ERROR"
          ]
        },
        "message": {
          "type": "string"
        },
        "details": {
          "description": "Optional structured error details."
        }
      }
    }
  }
}
```

## Related

* [REST API overview](/docs/api/rest-api): Every operation in this API.