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-
-# API Documentation
-
-## Overview
-
-The `nopayloaddb` project provides a RESTful API for managing payloads, global tags, payload types, and associated data. The API allows clients to perform CRUD operations on these resources.
-
-## Base URL
-
-All API endpoints are prefixed with `/api/cdb_rest/`.
-
----
-
-## Endpoints
-
-### 1. Create a New Payload IOV
-
-#### Base URL
-
-- **Endpoint**: `/api/cdb_rest/piov`
-
-#### HTTP Method: `POST`
-
-- **Description**: Creates a new Payload IOV with validation for logical IOV ranges and automatic calculations for `major_iov_end` and `minor_iov_end` if not provided.
-
-- **Request Body**:
-  ```json
-  {
-    "major_iov": 1000,
-    "minor_iov": 2000,
-    "major_iov_end": 3000,
-    "minor_iov_end": 4000,
-    "payload_url": "https://example.com/payload/1",
-    "checksum": "e99a18c428cb38d5f260853678922e03"
-  }
-  ```
-  - If `major_iov_end` or `minor_iov_end` is not provided, they are set to `sys.maxsize`.
-  - A composite IOV (`comb_iov`) is calculated as:
-    ```python
-    comb_iov = major_iov + (minor_iov / 10 ** 19)
-    ```
-
-- **Validation**:
-  - `major_iov_end` must be greater than or equal to `major_iov`.
-  - If `major_iov_end` equals `major_iov`, `minor_iov_end` must be greater than `minor_iov`.
-
-- **Error Response**:
-  - **Condition**: Invalid IOV ranges.
-  - **Response**:
-    ```json
-    {
-      "detail": "PayloadIOV ending IOVs should be greater or equal than starting. Provided end IOVs: major_iov: 1000 major_iov_end: 500 minor_iov: 2000 minor_iov_end: 1000"
-    }
-    ```
-  - **Status Code**: `500 INTERNAL SERVER ERROR`
-
-- **Success Response**:
-  ```json
-  {
-    "id": 1,
-    "major_iov": 1000,
-    "minor_iov": 2000,
-    "comb_iov": "1000.00000000000002",
-    "major_iov_end": 3000,
-    "minor_iov_end": 4000,
-    "payload_url": "https://example.com/payload/1",
-    "checksum": "e99a18c428cb38d5f260853678922e03"
-  }
-  ```
-
----
-
-### 2. Retrieve a Specific Payload IOV
-
-#### Base URL
-
-- **Endpoint**: `/api/cdb_rest/piov/<int:pk>`
-
-#### HTTP Method: `GET`
-
-- **Description**: Retrieves details of a specific Payload IOV identified by its primary key (`pk`).
-
-- **URL Parameters**:
-  - `<int:pk>` (integer, required): The primary key of the Payload IOV to retrieve.
-
-- **Response Example**:
-  - **Success**:
-    ```json
-    {
-      "id": 1,
-      "major_iov": 1000,
-      "minor_iov": 2000,
-      "comb_iov": "1000.00000000000002",
-      "major_iov_end": 3000,
-      "minor_iov_end": 4000,
-      "payload_url": "https://example.com/payload/1",
-      "checksum": "e99a18c428cb38d5f260853678922e03"
-    }
-    ```
-
-  - **Error**:
-    - **Condition**: The requested `pk` does not exist.
-    - **Response**:
-      ```json
-      {
-        "detail": "Not found."
-      }
-      ```
-    - **Status Code**: `404 NOT FOUND`
-
----
-
-### 3. Attach a Payload IOV to a Payload List
-
-#### Base URL
-
-- **Endpoint**: `/api/cdb_rest/piov_attach`
-
-#### HTTP Method: `PUT`
-
-- **Description**: Attaches a Payload IOV to a specified Payload List and validates for overlapping IOVs.
-
-- **Request Body**:
-  ```json
-  {
-    "payload_list": "example_payload_list",
-    "piov_id": 1
-  }
-  ```
-
-- **Validation**:
-  - Checks for overlapping IOVs if the associated Global Tag (GT) is locked.
-  - Handles special cases for open-ended IOVs.
-
-- **Error Response**:
-  - **Condition**: Payload List or Payload IOV is not found.
-  - **Response**:
-    ```json
-    {
-      "detail": "PayloadList not found."
-    }
-    ```
-  - **Status Code**: `500 INTERNAL SERVER ERROR`
-
-  - **Condition**: Overlapping IOVs detected.
-  - **Response**:
-    ```json
-    {
-      "detail": "GT is LOCKED. You are attempting to insert IOV (major_iov,minor_iov,major_iov_end, minor_iov_end) (1000,2000,3000,4000). Conflicts with existing IOV example_payload_url (1000,2000,3000,4000)"
-    }
-    ```
-  - **Status Code**: `500 INTERNAL SERVER ERROR`
-
-- **Success Response**:
-  ```json
-  {
-    "id": 1,
-    "payload_list": "example_payload_list",
-    "major_iov": 1000,
-    "minor_iov": 2000,
-    "major_iov_end": 3000,
-    "minor_iov_end": 4000,
-    "payload_url": "https://example.com/payload/1",
-    "checksum": "e99a18c428cb38d5f260853678922e03"
-  }
-  ```