opensafely-core / opensafely-core/opencodelists

Builder fails to load for large numbers of concepts

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#2,686 4 comments 0 reactions 1 assignee View on GitHub

@Mary-Anya is already working on this.

Since Jul 9, 2025.

Dominant language
Python
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Description

Why are we doing this?

To ensure newly created code lists from CSV are created correctly.

How will we know when it's done?

When CSV code lists build correctly into a draft code list.

What are we doing?

I recently created a new SNOMED code list from a CSV file. However, then I try to access the draft at
https://www.opencodelists.org/builder/{version}/ the page fails to load (Error code: 5).
I can't see a way to delete the code list from my list of code lists, so an unable to 're-try' from scratch, and thought it best to open this issue.


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