updatePurchaseOrderLineAttribute

mutation UpdatePurchaseOrderLineAttribute($input: UpdatePurchaseOrderLineAttributeInput!) {
  updatePurchaseOrderLineAttribute(input: $input) {
    purchaseOrderLineAttribute {
      Created
      Etag
      LastSessionId
      Updated
      _IonValueCount
      _ValueCount
    }
  }
}

{
  "input": {
    "etag": "string",
    "key": "string",
    "purchaseOrderLineId": 1
  }
}

{
  "data": {
    "updatePurchaseOrderLineAttribute": {
      "purchaseOrderLineAttribute": {
        "Created": "value",
        "Etag": "string",
        "LastSessionId": "string",
        "Updated": "value",
        "_IonValueCount": 1,
        "_ValueCount": 1
      }
    }
  }
}