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chore(llmobs): make mlapp error message more helpful [backport 3.9] #13735

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chore(llmobs): make mlapp error message more helpful [backport 3.9] #13735

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1d6ddd2
chore(llmobs): make mlapp error message more helpful (#13714)
Yun-Kim Jun 20, 2025
f0ca90e
Merge branch '3.9' into backport-13714-to-3.9
Yun-Kim Jun 23, 2025
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5 changes: 3 additions & 2 deletions ddtrace/llmobs/_llmobs.py
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Original file line number Diff line number Diff line change
Expand Up @@ -812,8 +812,9 @@ def _start_span(
ml_app = ml_app if ml_app is not None else _get_ml_app(span)
if ml_app is None:
raise ValueError(
"ML app is required for sending LLM Observability data. "
"Ensure this configuration is set before running your application."
"ml_app is required for sending LLM Observability data. "
"Ensure the name of your LLM application is set via `DD_LLMOBS_ML_APP` or `LLMObs.enable(ml_app='...')`"
"before running your application."
)
span._set_ctx_items({DECORATOR: _decorator, SPAN_KIND: operation_kind, ML_APP: ml_app})
return span
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