Change in Chain.summary_links output for 0#BOF27+ (BOF27 --> /BOF27)

valstar

Hello,

I am using the LSEG Python SDK and issuing option chain requests like:

from lseg.data.discovery import Chain
chain_obj = Chain("0#BOF27+")
summary = chain_obj.summary_links

Until a couple of days ago, for this exact call:

Chain("0#BOF27+").summary_links[0]

the returned value was: BOF27

Now, with no changes to my code, the same call returns:/BOF27

I have also confirmed in Workspace that the chain shows:

• RIC: 0#BOF27+
• Delayed RIC: 0#/BOF27+

My questions are:

1. Is this change in summary_links output expected behavior?
2. Is the / prefix being returned because the chain is resolving to delayed rather than real-time data?
3. Can summary_links vary depending on account permissions or entitlements?
4. Is there any documented guarantee about the format or meaning of summary_links, or should it be treated as informational only?

This change breaks a consistency check in my code, so I would like to understand whether this is due to permissions or an intentional SDK/data behavior change.

Thanks in advance for any clarification.

Jirapongse

@valstar

Thank you for reaching out to us.

I ran the code and also got /BOF27.

This could be a permission issue. I tested it in the Workspace Quote App and also got /BOF27.

As far as I know, Workspace can convert a RIC into a delayed RIC based on an account’s permissions.

1. Is this change in summary_links output expected behavior?
   Yes, it could relate to the account's permissions.
   
2. Is the / prefix being returned because the chain is resolving to delayed rather than real-time data?
   Yes, the / prefix represents a delayed RIC.
   
3. Can summary_links vary depending on account permissions or entitlements?
   Yes, the delayed RICs in the summary_links depends on the account's permissions.
   
4. Is there any documented guarantee about the format or meaning of summary_links, or should it be treated as informational only?
   The library simply retrieves data from the endpoint and formats it into a data frame. Based on the Workspace Quote output, /BOF27 is the first RIC in the chain. I verified that the number of RICs in summary_links depends on the display template. For example, the display template for 0#BOF27+ is 209, and the code shows that the number of RICs in summary_links for this template (209) is one. For more details, you may need to contact the content support team directly via LSEG Support.