inserting project tasks under existing project using REST API

Hi @Driss ,

I have checked with the same JSON, and it is working fine for me.

First, please verify if you are able to create project tasks directly on the screen with the same data or not.

{
    "ProjectID": {
        "value": "PR00000019"
    },
    "ProjectTaskID": {
        "value": "04"
    },
    "Description": {
        "value": "TESTING"
    },
    "VisibilitySettings": {
        "GL": {
            "value": "true"
        },
        "AP": {
            "value": "true"
        },
        "CRM": {
            "value": "true"
        },
        "Expenses": {
            "value": "true"
        },
        "IN": {
            "value": "true"
        },
        "PO": {
            "value": "true"
        },
        "SO": {
            "value": "true"
        },
        "TimeEntries": {
            "value": "true"
        },
        "AR": {
            "value": "true"
        },
        "CA": {
            "value": "true"
        }
    }
}

@jinin Yes when i try to create manually it working with no issues

@jinin I found the issue instead of 

"ProjectTaskID": {
    "value": "L-726483"
  },

i delete “-” from the value 

"ProjectTaskID": {
    "value": "L726483"
  },