diff --git a/CHANGELOG.md b/CHANGELOG.md
index 58dd6da..8377be0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 
+- manipulation TransitionValidToAccuracyBelowSpecifiedLimits for metrics
 - manipulation PhysicallyDisconnectRemovableSubsystemAfterPhysicalConnectorProvided
 - manipulation SetActiveModeOfOperation for metrics
 - manipulation PhysicallyDisconnectRemovableSubsystemAfterSettingActivationStateOnOrStndBy
diff --git a/src/t2iapi/metric/service.proto b/src/t2iapi/metric/service.proto
index 5943b1e..6e18aa7 100644
--- a/src/t2iapi/metric/service.proto
+++ b/src/t2iapi/metric/service.proto
@@ -120,4 +120,14 @@ service MetricService {
    */
   rpc SetActiveModeOfOperation (BasicHandleRequest)
       returns (BasicResponse);
+
+  /*
+  For the metric with the provided handle perform the following transition:
+   - provide pm:MetricValue/@Value resp. @Samples with pm:MetricQuality/@Validity = 'Vld' then
+   - change its accuracy such that it does not meet the limits specified either by an applicable standard that the
+     SDC METRIC PROVIDER demonstrates conformity to or in the ACCOMPANYING INFORMATION of the SDC METRIC PROVIDER
+   - provide a new pm:MetricValue/@Value resp. @Samples.
+   */
+  rpc TransitionValidToAccuracyBelowSpecifiedLimits (BasicHandleRequest)
+      returns (BasicResponse);
 }