How to change the 'Incomplete' status of created requisition using REST API to 'Pending approval'?

Summary

The created requisition using REST API goes to Incomplete status, how to change it to Pending Approval?

Content

I am trying to Create a Requisition using REST API, but the status is 'Incomplete', it should be set to 'Pending approval', these are the steps I made:

1. POST in Create Requisition API header, details as follows:

• URL: https://eiqs-dev1.fa.us6.oraclecloud.com/fscmRestApi/resources/11.13.18.05/purchaseRequisitions
• Method: POST
• Authorization: Basic Auth
• Header(s): Content-Type | application/json
• Request Payload Body:
  • {

        "RequisitioningBUId": 300000003203807,

        "PreparerId": 300000001226069,

        "ExternallyManagedFlag": false,

        "Description" : "Test 00.02 - Distributions",

        "FundsStatus": "Not reserved",

        "FundsStatusCode": "NOT_RESERVED",

        "lines":

        [

            {

                "LineNumber": 1,

                "LineTypeId": 1,

                "CategoryName": "Gas Pipes",

                "CategoryId"