Need a Sample Payload for Item EFF update using Rest API

We want to update the Item EFF using Rest API using the Endpoint info available in below location

Following sample payload tried and it gave error as "Invalid attribute "[OrganizationCode, ItemClass, ItemNumber]" in the payload."

Endpoint : https://ext-dev2.fa.em2.oraclecloud.com:443/fscmRestApi/resources/11.13.18.05/itemsV2/00040000000EACED00057708000110D962375BE20000000EACED00057708000110D931A353350000000EACED00057708000110D962375BE20000000EACED00057708000110D931A35335/child/ItemEffCategory/00040000000EACED00057708000110D962375BE20000000EACED00057708000110D931A353350000000EACED00057708000110D962375BE20000000EACED00057708000110D931A35335

Request Payload:

{

  "OrganizationCode": "MST",

  "ItemClass": "Beverages",

  "ItemNumber": "42402201103393",

  "ItemEffCategory": [

    {

      "InventoryItemId": 300000818453474,

      "OrganizationId": 300000003445557,

      "CategoryCode": "Beverages",

      "XxStatuses": [

        {

          "CategoryCode": "Beverages",

          "ContextCode": "XX_STATUSES",

          "xxReplaces": "RED"

        }

      ]

    }

  ]

}