update: kafka topic exclusion conditions for datadog

It is not clear that at least one value for `include_consumer_groups` is required for `exlude_topics` to apply. [DOC-1256]
aiven · Dec 13, 2024 · a2864e7 · a2864e7
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commit a2864e7
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diff --git a/docs/products/kafka/howto/datadog-customised-metrics.md b/docs/products/kafka/howto/datadog-customised-metrics.md
@@ -78,6 +78,10 @@ parameters:
 -   `exclude_topics`: Specify a comma-separated list of topics to
     exclude.
 
+    :::warning
+    When `exclude_topics` are defined, some `include_consumer_groups` are also required so that it applies.
+    :::
+
 -   `include_consumer_groups`: Specify a comma-separated list of
     consumer groups to include.