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new 934c10b1cd3 docs: Adding admonition box to warn about MVD (#16712)
934c10b1cd3 is described below
commit 934c10b1cd330d91832c88883782914129aba063
Author: Edgar Melendrez <[email protected]>
AuthorDate: Mon Jul 22 17:32:23 2024 -0700
docs: Adding admonition box to warn about MVD (#16712)
Co-authored-by: Victoria Lim <[email protected]>
Co-authored-by: Benedict Jin <[email protected]>
---
docs/querying/lookups.md | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/docs/querying/lookups.md b/docs/querying/lookups.md
index a22fbf03928..05176f229b1 100644
--- a/docs/querying/lookups.md
+++ b/docs/querying/lookups.md
@@ -50,6 +50,10 @@ Other lookup types are available as extensions, including:
- Globally cached lookups from local files, remote URIs, or JDBC through
[lookups-cached-global](./lookups-cached-global.md).
- Globally cached lookups from a Kafka topic through
[kafka-extraction-namespace](./kafka-extraction-namespace.md).
+:::info
+[Multi-value dimensions](multi-value-dimensions.md) (MVDs) are not supported
as keys in lookups. For example, to map the MVD `["A", "B", "C"]` to the value
`x` in your lookup, flatten the MVD and map each element of the MVD to the
value. Your lookup will have separate key-value pairs for each element of the
MVD: `"A": "x"`, `"B": "x"`, and `"C": "x"`.
+:::
+
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