Insufficient Scope Error (trapi.streaming.pricing.read) When Using LSEG Data Library with ld.get_dat

ianzhu

Dear LSEG Developer Community,

I am encountering an "insufficient scope" error when using the LSEG Data Library for Python (version 2.1.1) to retrieve snapshot pricing data for EUR= and GBP= via ld.get_data. Despite successful authentication and session opening, the request fails with a 403 Forbidden error due to missing the trapi.streaming.pricing.read scope. I would appreciate your guidance on resolving this issue.

Environment

• LSEG Data Library: 2.1.1
• Python: 3.12.3
• OS: Linux (Ubuntu)
• Configuration: Using platform.rdp session with lseg-data.config.json
• Client ID: [MASKED]

Source Code

Below is the Python script (test_jpy.py) I am running, based on LD Lib. Python Tutorial 3 - get_data.ipynb:

Error Log

Here is the relevant error output from the latest run (sensitive information masked):

textCopyOpening session...[2025-05-11T02:56:16.019846+08:00] - [DEBUG] - [ld] - [132973301784704] | MainThreadLD version is 2.1.1; Python version is 3.12.3[2025-05-11T02:56:16.071211+08:00] - [DEBUG] - [ld] - [132973301784704] | MainThreadRead configs: /home/ian/rdp_v2_project/lseg-data.config.json, /home/ian/lseg-data.config.json[2025-05-11T02:56:17.011363+08:00] - [DEBUG] - [sessions.platform.rdp.0] - [132973027874496] | AuthManager-ThreadHTTP Response id 0 status_code = 200 text = { "expires_in":7199, "token_type":"Bearer", "access_token":"[MASKED]"}[2025-05-11T02:56:17.030189+08:00] - [DEBUG] - [sessions.platform.rdp.0] - [132973301784704] | MainThreadOpened sessionSession opened successfully.Fetching data for EUR= and GBP=...[2025-05-11T02:56:18.122872+08:00] - [DEBUG] - [sessions.platform.rdp.0] - [132972705924800] | OpenUniverseStreams-Thread_0HTTP Response id 1 status_code = 403 text = {"error":{"id":"9a1ea292-7db7-497f-983c-b9674afa8d65","code":"insufficient_scope","message":"access denied. Scopes required to access the resource: [trapi.streaming.pricing.read]. Missing scopes: [trapi.streaming.pricing.read]","status":"Forbidden"}}[2025-05-11T02:56:18.135051+08:00] - [DEBUG] - [sessions.platform.rdp.0] - [132973301784704] | MainThreadFailure retrieving data for ['EUR=', 'GBP=']: Insufficient scope for key=/streaming/pricing/v1/, method=GET.Required scopes: {'trapi.streaming.pricing.read'}Available scopes: {}Missing scopes: {'trapi.streaming.pricing.read'}An error occurred: Insufficient scope for key=/streaming/pricing/v1/, method=GET.Required scopes: {'trapi.streaming.pricing.read'}Available scopes: {}Missing scopes: {'trapi.streaming.pricing.read'}Closing session...Session closed.

Issue Description

• Problem: The script fails at ld.get_data with a 403 Forbidden error, indicating that my account lacks the trapi.streaming.pricing.read scope required for the /streaming/pricing/v1/ endpoint.
• Observations:
  • Authentication succeeds, and the session opens correctly.
  • The error occurs when requesting pricing data for EUR= and GBP= with fields BID and ASK.
  • Previous attempts with other RICs (e.g., JPY=) yielded the same error.
  • Multiple config files are loaded (/home/ian/rdp_v2_project/lseg-data.config.json and /home/ian/lseg-data.config.json), which may cause conflicts.
• Previous Attempts:
  • Verified lseg-data.config.json with signon_control: true.
  • Updated lseg-data to 2.1.1 and fixed setuptools warnings.
  • Syntax errors (e.g., unclosed lists, try-except issues) were resolved based on Pylance feedback.

Questions

1. How can I obtain the trapi.streaming.pricing.read scope for my account? Do I need a specific subscription for real-time forex data (EUR=, GBP=)? Whom should I contact to update my account permissions?
2. Is there a workaround to retrieve BID and ASK for EUR= and GBP= without this scope (e.g., using historical pricing or another endpoint)?
3. Does lseg-data 2.1.1 support the Pricing interface for streaming data? If so, what is the correct import path (e.g., lseg.data.streaming.Pricing)?
4. Could the multiple config files cause this issue? Should I remove /home/ian/lseg-data.config.json?

ianzhu

import lseg.data as ld
import pandas as pd

try:
# Open session
print("Opening session...")
session = ld.open_session('platform.rdp')
print("Session opened successfully.")

# Define query
instruments = ['EUR=', 'GBP=']  # RICs from tutorial
fields = ['BID', 'ASK']  # Fields from tutorial

# Fetch snapshot data
print("Fetching data for EUR= and GBP=...")
data = ld.get_data(
    universe=instruments,
    fields=fields
)

# Output results
print("Data retrieved:")
print(data)

except Exception as e:
print(f"An error occurred: {str(e)}")

finally:
# Close session
try:
print("Closing session...")
session.close()
print("Session closed.")
except NameError:
print("Session was not created.")