Prometheus: Stabilize OpenTelemetry Attributes to Prometheus labels

CHANGELOG.md

@@ -57,6 +57,8 @@ release.
   ([#4898](https://github.com/open-telemetry/opentelemetry-specification/pull/4898))
 - Stabilize Prometheus Dropped Types transformation.
   ([#4952](https://github.com/open-telemetry/opentelemetry-specification/pull/4952))
+- Stabilize OpenTelemetry Attributes to Prometheus labels transformation.
+  ([#4963](https://github.com/open-telemetry/opentelemetry-specification/pull/4963))
 
 ### SDK Configuration
 

specification/compatibility/prometheus_and_openmetrics.md

@@ -365,8 +365,6 @@ in keys).
 
 ## OTLP Metric points to Prometheus
 
-**Status**: [Development](../document-status.md)
-
 ### Metric Metadata
 
 **Status**: [Development](../document-status.md)
@@ -520,21 +518,20 @@ An [OpenTelemetry Summary](../metrics/data-model.md#summary-legacy) MUST be conv
 
 ### Metric Attributes
 
-**Status**: [Development](../document-status.md)
+**Status**: [Stable](../document-status.md)
 
 OpenTelemetry Metric Attributes MUST be converted to
 [Prometheus labels](https://prometheus.io/docs/concepts/data_model/#metric-names-and-labels).
 String Attribute values are converted directly to Metric Attributes, and
 non-string Attribute values MUST be converted to string attributes following
-the [attribute specification](../common/README.md#attribute).  Prometheus
+the [attribute specification](../common/README.md#anyvalue-representation-for-non-otlp-protocols). Prometheus
 naming conventions encourage metric names to match the following regular expression:
-`[a-zA-Z_]([a-zA-Z0-9_])*`. Discouraged characters SHOULD be replace with the `_` character.
-Multiple consecutive `_` characters SHOULD be replaced with a single `_`
-character. This may cause ambiguity in scenarios where multiple similar-named
-attributes share invalid characters at the same location.  In such unlikely
-cases, if multiple key-value pairs are converted to have the same Prometheus
-key, the values MUST be concatenated together, separated by `;`, and ordered by
-the lexicographical order of the original keys.
+`[a-zA-Z_]([a-zA-Z0-9_])*`. Discouraged characters SHOULD be replaced with the
+`_` character. Multiple consecutive `_` characters SHOULD be replaced with a
+single `_` character. This conversion, or other labels (e.g. `otel_scope_name`)
+added by this specification, may cause different OpenTelemetry keys to map to
+the same Prometheus key. In such cases, the values MUST be concatenated together,
+separated by `;`, and ordered by the lexicographical order of the original keys.
 
 ### Exemplars