diff --git a/manifests/cpp.yml b/manifests/cpp.yml
index ca73d6d846a..3c48946ba3a 100644
--- a/manifests/cpp.yml
+++ b/manifests/cpp.yml
@@ -287,8 +287,7 @@ manifest:
   tests/parametric/test_tracer.py::Test_Tracer::test_tracer_span_top_level_attributes: missing_feature (metrics cannot be set manually)
   tests/parametric/test_tracer.py::Test_TracerBaseService: missing_feature (_dd.base_service is not implemented)
   tests/parametric/test_tracer.py::Test_TracerSCITagging: missing_feature
-  tests/parametric/test_tracer.py::Test_TracerServiceNameSource::test_tracer_manual_service_name_sets_srv_src: irrelevant (Only implemented for Java)
-  tests/parametric/test_tracer.py::Test_TracerServiceNameSource::test_tracer_no_srv_src_when_service_not_manually_set: irrelevant (Only implemented for Java)
+  tests/parametric/test_tracer.py::Test_TracerServiceNameSource: irrelevant
   tests/parametric/test_tracer.py::Test_TracerUniversalServiceTagging::test_tracer_service_name_environment_variable: "missing_feature (FIXME: library test client sets empty string as the service name)"
   tests/parametric/test_tracer_flare.py: '>=2.0.0'  # Modified by easy win activation script
   tests/parametric/test_tracer_flare.py::TestTracerFlareV1::test_flare_log_level_order: missing_feature  # Created by easy win activation script
diff --git a/manifests/cpp_httpd.yml b/manifests/cpp_httpd.yml
index 8d7c6ba1fd5..0459c2e20f1 100644
--- a/manifests/cpp_httpd.yml
+++ b/manifests/cpp_httpd.yml
@@ -84,8 +84,7 @@ manifest:
   tests/parametric/test_telemetry.py::Test_TelemetrySCAEnvVar::test_telemetry_sca_enabled_propagated_specifics: irrelevant
   tests/parametric/test_tracer.py::Test_ProcessTags_ServiceName: missing_feature
   tests/parametric/test_tracer.py::Test_TracerBaseService: missing_feature (_dd.base_service is not implemented)
-  tests/parametric/test_tracer.py::Test_TracerServiceNameSource::test_tracer_manual_service_name_sets_srv_src: irrelevant (Only implemented for Java)
-  tests/parametric/test_tracer.py::Test_TracerServiceNameSource::test_tracer_no_srv_src_when_service_not_manually_set: irrelevant (Only implemented for Java)
+  tests/parametric/test_tracer.py::Test_TracerServiceNameSource: irrelevant
   tests/parametric/test_tracer.py::Test_TracerUniversalServiceTagging::test_tracer_service_name_environment_variable: "missing_feature (FIXME: library test client sets empty string as the service name)"
   tests/remote_config/test_remote_configuration.py::Test_RemoteConfigurationExtraServices: missing_feature
   tests/remote_config/test_remote_configuration.py::Test_RemoteConfigurationUpdateSequenceASMDD: missing_feature
diff --git a/manifests/cpp_nginx.yml b/manifests/cpp_nginx.yml
index 536dde96fc2..a2f44aed522 100644
--- a/manifests/cpp_nginx.yml
+++ b/manifests/cpp_nginx.yml
@@ -306,8 +306,7 @@ manifest:
   tests/parametric/test_telemetry.py::Test_TelemetrySCAEnvVar::test_telemetry_sca_enabled_propagated_specifics: irrelevant
   tests/parametric/test_tracer.py::Test_ProcessTags_ServiceName: missing_feature
   tests/parametric/test_tracer.py::Test_TracerBaseService: missing_feature (_dd.base_service is not implemented)
-  tests/parametric/test_tracer.py::Test_TracerServiceNameSource::test_tracer_manual_service_name_sets_srv_src: irrelevant (Only implemented for Java)
-  tests/parametric/test_tracer.py::Test_TracerServiceNameSource::test_tracer_no_srv_src_when_service_not_manually_set: irrelevant (Only implemented for Java)
+  tests/parametric/test_tracer.py::Test_TracerServiceNameSource: irrelevant
   tests/parametric/test_tracer.py::Test_TracerUniversalServiceTagging::test_tracer_service_name_environment_variable: "missing_feature (FIXME: library test client sets empty string as the service name)"
   tests/remote_config/test_remote_configuration.py::Test_RemoteConfigurationExtraServices: missing_feature
   tests/remote_config/test_remote_configuration.py::Test_RemoteConfigurationUpdateSequenceASMDD: v1.3.0
diff --git a/manifests/dotnet.yml b/manifests/dotnet.yml
index e49fb25082f..519a4ba7fdf 100644
--- a/manifests/dotnet.yml
+++ b/manifests/dotnet.yml
@@ -1014,6 +1014,7 @@ manifest:
   tests/parametric/test_tracer.py::Test_TracerSCITagging: v2.48.0
   tests/parametric/test_tracer.py::Test_TracerServiceNameSource::test_tracer_manual_service_name_sets_srv_src: v3.40.0
   tests/parametric/test_tracer.py::Test_TracerServiceNameSource::test_tracer_no_srv_src_when_service_not_manually_set: v3.40.0
+  tests/parametric/test_tracer.py::Test_TracerServiceNameSource::test_tracer_srv_src_inherited_on_child_span: bug (APMLP-1227)
   tests/parametric/test_tracer.py::Test_TracerUniversalServiceTagging::test_tracer_service_name_environment_variable: "missing_feature (FIXME: library test client sets empty string as the service name)"
   tests/parametric/test_tracer_flare.py::TestTracerFlareV1: v2.48.0
   tests/remote_config/test_remote_configuration.py::Test_RemoteConfigurationExtraServices: v2.36.0
diff --git a/manifests/golang.yml b/manifests/golang.yml
index 6fb9dc15273..ef3b8618aa9 100644
--- a/manifests/golang.yml
+++ b/manifests/golang.yml
@@ -1203,6 +1203,7 @@ manifest:
   tests/parametric/test_tracer.py::Test_TracerSCITagging: v1.48.0
   tests/parametric/test_tracer.py::Test_TracerServiceNameSource::test_tracer_manual_service_name_sets_srv_src: irrelevant (Only implemented for Java)
   tests/parametric/test_tracer.py::Test_TracerServiceNameSource::test_tracer_no_srv_src_when_service_not_manually_set: '>=2.7.0-dev.1'
+  tests/parametric/test_tracer.py::Test_TracerServiceNameSource::test_tracer_srv_src_inherited_on_child_span: v2.9.0-dev
   tests/parametric/test_tracer.py::Test_TracerUniversalServiceTagging::test_tracer_service_name_environment_variable: "missing_feature (FIXME: library test client sets empty string as the service name)"
   tests/parametric/test_tracer_flare.py::TestTracerFlareV1: '>=2.5.0'  # Modified by easy win activation script
   tests/parametric/test_tracer_flare.py::TestTracerFlareV1::test_flare_log_level_order: missing_feature  # Created by easy win activation script
diff --git a/manifests/java_otel.yml b/manifests/java_otel.yml
index 473c59f47a0..6781d428f75 100644
--- a/manifests/java_otel.yml
+++ b/manifests/java_otel.yml
@@ -54,8 +54,7 @@ manifest:
   tests/parametric/test_span_sampling.py::Test_Span_Sampling::test_keep_span_with_stats_computation_sss010: missing_feature (this has to be implemented by a lot of the tracers and we need to do a bit of work on the assert)
   tests/parametric/test_telemetry.py::Test_TelemetrySCAEnvVar::test_telemetry_sca_enabled_propagated_specifics: irrelevant
   tests/parametric/test_tracer.py::Test_ProcessTags_ServiceName: missing_feature
-  tests/parametric/test_tracer.py::Test_TracerServiceNameSource::test_tracer_manual_service_name_sets_srv_src: irrelevant (Only implemented for Java)
-  tests/parametric/test_tracer.py::Test_TracerServiceNameSource::test_tracer_no_srv_src_when_service_not_manually_set: irrelevant (Only implemented for Java)
+  tests/parametric/test_tracer.py::Test_TracerServiceNameSource: irrelevant
   tests/parametric/test_tracer.py::Test_TracerUniversalServiceTagging::test_tracer_service_name_environment_variable: "missing_feature (FIXME: library test client sets empty string as the service name)"
   tests/stats/test_stats.py::Test_Stats_Service_Source: irrelevant (Only implemented for Java)
   tests/test_library_conf.py::Test_HeaderTags_DynamicConfig::test_tracing_client_http_header_tags_apm_multiconfig: missing_feature (APM_TRACING_MULTICONFIG is not supported in any language yet)
diff --git a/manifests/nodejs.yml b/manifests/nodejs.yml
index 13a553b27e5..9f18925f229 100644
--- a/manifests/nodejs.yml
+++ b/manifests/nodejs.yml
@@ -2127,8 +2127,7 @@ manifest:
   tests/parametric/test_tracer.py::Test_Tracer::test_tracer_span_top_level_attributes: missing_feature (nodejs overrides the manually set service name)
   tests/parametric/test_tracer.py::Test_TracerSCITagging: *ref_3_21_0
   tests/parametric/test_tracer.py::Test_TracerSCITagging::test_tracer_repository_url_strip_credentials: missing_feature (nodejs does not strip credentials yet)
-  tests/parametric/test_tracer.py::Test_TracerServiceNameSource::test_tracer_manual_service_name_sets_srv_src: irrelevant (Only implemented for Java)
-  tests/parametric/test_tracer.py::Test_TracerServiceNameSource::test_tracer_no_srv_src_when_service_not_manually_set: irrelevant (Only implemented for Java)
+  tests/parametric/test_tracer.py::Test_TracerServiceNameSource: irrelevant
   tests/parametric/test_tracer.py::Test_TracerUniversalServiceTagging::test_tracer_service_name_environment_variable: "missing_feature (FIXME: library test client sets empty string as the service name)"
   tests/parametric/test_tracer_flare.py::TestTracerFlareV1: *ref_5_15_0
   tests/parametric/test_tracer_flare.py::TestTracerFlareV1::test_tracer_flare: missing_feature (Only plaintext files are sent presently)
diff --git a/manifests/nodejs_otel.yml b/manifests/nodejs_otel.yml
index 1c244f76a3f..b2d8ff68919 100644
--- a/manifests/nodejs_otel.yml
+++ b/manifests/nodejs_otel.yml
@@ -71,8 +71,7 @@ manifest:
   tests/parametric/test_span_sampling.py::Test_Span_Sampling::test_keep_span_with_stats_computation_sss010: missing_feature (this has to be implemented by a lot of the tracers and we need to do a bit of work on the assert)
   tests/parametric/test_telemetry.py::Test_TelemetrySCAEnvVar::test_telemetry_sca_enabled_propagated_specifics: irrelevant
   tests/parametric/test_tracer.py::Test_ProcessTags_ServiceName: missing_feature
-  tests/parametric/test_tracer.py::Test_TracerServiceNameSource::test_tracer_manual_service_name_sets_srv_src: irrelevant (Only implemented for Java)
-  tests/parametric/test_tracer.py::Test_TracerServiceNameSource::test_tracer_no_srv_src_when_service_not_manually_set: irrelevant (Only implemented for Java)
+  tests/parametric/test_tracer.py::Test_TracerServiceNameSource: irrelevant
   tests/parametric/test_tracer.py::Test_TracerUniversalServiceTagging::test_tracer_service_name_environment_variable: "missing_feature (FIXME: library test client sets empty string as the service name)"
   tests/stats/test_stats.py::Test_Stats_Service_Source: irrelevant (Only implemented for Java)
   tests/test_library_conf.py::Test_HeaderTags_DynamicConfig::test_tracing_client_http_header_tags_apm_multiconfig: missing_feature (APM_TRACING_MULTICONFIG is not supported in any language yet)
diff --git a/manifests/php.yml b/manifests/php.yml
index 7d80cea05af..fcae3ea3a44 100644
--- a/manifests/php.yml
+++ b/manifests/php.yml
@@ -859,8 +859,7 @@ manifest:
   tests/parametric/test_trace_sampling.py::Test_Trace_Sampling_With_W3C: missing_feature
   tests/parametric/test_tracer.py::Test_ProcessTags_ServiceName: missing_feature
   tests/parametric/test_tracer.py::Test_TracerSCITagging: v1.2.0
-  tests/parametric/test_tracer.py::Test_TracerServiceNameSource::test_tracer_manual_service_name_sets_srv_src: irrelevant (Only implemented for Java)
-  tests/parametric/test_tracer.py::Test_TracerServiceNameSource::test_tracer_no_srv_src_when_service_not_manually_set: irrelevant (Only implemented for Java)
+  tests/parametric/test_tracer.py::Test_TracerServiceNameSource: irrelevant
   tests/parametric/test_tracer.py::Test_TracerUniversalServiceTagging::test_tracer_service_name_environment_variable: "missing_feature (FIXME: library test client sets empty string as the service name)"
   tests/parametric/test_tracer_flare.py::TestTracerFlareV1: missing_feature
   tests/parametric/test_tracer_flare.py::TestTracerFlareV1::test_flare_log_level_order: '>=1.16.0'
diff --git a/manifests/python.yml b/manifests/python.yml
index e0e054a183b..9639efede57 100644
--- a/manifests/python.yml
+++ b/manifests/python.yml
@@ -1797,8 +1797,7 @@ manifest:
   tests/parametric/test_tracer.py::Test_ProcessTags_ServiceName: v4.7.0
   tests/parametric/test_tracer.py::Test_Tracer: v2.8.0
   tests/parametric/test_tracer.py::Test_TracerSCITagging: v1.12.0
-  tests/parametric/test_tracer.py::Test_TracerServiceNameSource::test_tracer_manual_service_name_sets_srv_src: irrelevant (Only implemented for Java)
-  tests/parametric/test_tracer.py::Test_TracerServiceNameSource::test_tracer_no_srv_src_when_service_not_manually_set: irrelevant (Only implemented for Java)
+  tests/parametric/test_tracer.py::Test_TracerServiceNameSource: irrelevant
   tests/parametric/test_tracer.py::Test_TracerUniversalServiceTagging: v0.36.0
   tests/parametric/test_tracer.py::Test_TracerUniversalServiceTagging::test_tracer_service_name_environment_variable: "missing_feature (FIXME: library test client sets empty string as the service name)"
   tests/parametric/test_tracer_flare.py::TestTracerFlareV1: v3.12.0.dev
diff --git a/manifests/python_lambda.yml b/manifests/python_lambda.yml
index f7f43cfe4fb..a5134f271ec 100644
--- a/manifests/python_lambda.yml
+++ b/manifests/python_lambda.yml
@@ -317,8 +317,7 @@ manifest:
   tests/parametric/test_span_sampling.py::Test_Span_Sampling::test_keep_span_with_stats_computation_sss010: missing_feature (this has to be implemented by a lot of the tracers and we need to do a bit of work on the assert)
   tests/parametric/test_telemetry.py::Test_TelemetrySCAEnvVar::test_telemetry_sca_enabled_propagated_specifics: irrelevant
   tests/parametric/test_tracer.py::Test_ProcessTags_ServiceName: missing_feature
-  tests/parametric/test_tracer.py::Test_TracerServiceNameSource::test_tracer_manual_service_name_sets_srv_src: irrelevant (Only implemented for Java)
-  tests/parametric/test_tracer.py::Test_TracerServiceNameSource::test_tracer_no_srv_src_when_service_not_manually_set: irrelevant (Only implemented for Java)
+  tests/parametric/test_tracer.py::Test_TracerServiceNameSource: irrelevant
   tests/parametric/test_tracer.py::Test_TracerUniversalServiceTagging::test_tracer_service_name_environment_variable: "missing_feature (FIXME: library test client sets empty string as the service name)"
   tests/stats/test_stats.py::Test_Stats_Service_Source: irrelevant (Only implemented for Java)
   tests/test_library_conf.py::Test_HeaderTags_DynamicConfig::test_tracing_client_http_header_tags_apm_multiconfig: missing_feature (APM_TRACING_MULTICONFIG is not supported in any language yet)
diff --git a/manifests/python_otel.yml b/manifests/python_otel.yml
index c328e8caccb..7492efeaafb 100644
--- a/manifests/python_otel.yml
+++ b/manifests/python_otel.yml
@@ -64,8 +64,7 @@ manifest:
   tests/parametric/test_span_sampling.py::Test_Span_Sampling::test_keep_span_with_stats_computation_sss010: missing_feature (this has to be implemented by a lot of the tracers and we need to do a bit of work on the assert)
   tests/parametric/test_telemetry.py::Test_TelemetrySCAEnvVar::test_telemetry_sca_enabled_propagated_specifics: irrelevant
   tests/parametric/test_tracer.py::Test_ProcessTags_ServiceName: missing_feature
-  tests/parametric/test_tracer.py::Test_TracerServiceNameSource::test_tracer_manual_service_name_sets_srv_src: irrelevant (Only implemented for Java)
-  tests/parametric/test_tracer.py::Test_TracerServiceNameSource::test_tracer_no_srv_src_when_service_not_manually_set: irrelevant (Only implemented for Java)
+  tests/parametric/test_tracer.py::Test_TracerServiceNameSource: irrelevant
   tests/parametric/test_tracer.py::Test_TracerUniversalServiceTagging::test_tracer_service_name_environment_variable: "missing_feature (FIXME: library test client sets empty string as the service name)"
   tests/stats/test_stats.py::Test_Stats_Service_Source: irrelevant (Only implemented for Java)
   tests/test_library_conf.py::Test_HeaderTags_DynamicConfig::test_tracing_client_http_header_tags_apm_multiconfig: missing_feature (APM_TRACING_MULTICONFIG is not supported in any language yet)
diff --git a/manifests/ruby.yml b/manifests/ruby.yml
index db08f4c4cab..54684f8788a 100644
--- a/manifests/ruby.yml
+++ b/manifests/ruby.yml
@@ -1554,8 +1554,7 @@ manifest:
   tests/parametric/test_tracer.py::Test_ProcessTags_ServiceName: missing_feature
   tests/parametric/test_tracer.py::Test_TracerBaseService: missing_feature (_dd.base_service is not implemented)
   tests/parametric/test_tracer.py::Test_TracerSCITagging: v1.21.0
-  tests/parametric/test_tracer.py::Test_TracerServiceNameSource::test_tracer_manual_service_name_sets_srv_src: irrelevant (Only implemented for Java)
-  tests/parametric/test_tracer.py::Test_TracerServiceNameSource::test_tracer_no_srv_src_when_service_not_manually_set: irrelevant (Only implemented for Java)
+  tests/parametric/test_tracer.py::Test_TracerServiceNameSource: irrelevant
   tests/parametric/test_tracer.py::Test_TracerUniversalServiceTagging::test_tracer_service_name_environment_variable: "missing_feature (FIXME: library test client sets empty string as the service name)"
   tests/parametric/test_tracer_flare.py::TestTracerFlareV1: '>=2.27.0'  # Modified by easy win activation script
   tests/parametric/test_tracer_flare.py::TestTracerFlareV1::test_flare_log_level_order: missing_feature  # Created by easy win activation script
diff --git a/manifests/rust.yml b/manifests/rust.yml
index 1712885a96f..3d55c8280aa 100644
--- a/manifests/rust.yml
+++ b/manifests/rust.yml
@@ -292,8 +292,7 @@ manifest:
   tests/parametric/test_tracer.py::Test_Tracer: missing_feature  # Created by easy win activation script
   tests/parametric/test_tracer.py::Test_TracerBaseService: missing_feature (_dd.base_service is not implemented)
   tests/parametric/test_tracer.py::Test_TracerSCITagging: missing_feature  # Created by easy win activation script
-  tests/parametric/test_tracer.py::Test_TracerServiceNameSource::test_tracer_manual_service_name_sets_srv_src: irrelevant (Only implemented for Java)
-  tests/parametric/test_tracer.py::Test_TracerServiceNameSource::test_tracer_no_srv_src_when_service_not_manually_set: irrelevant (Only implemented for Java)
+  tests/parametric/test_tracer.py::Test_TracerServiceNameSource: irrelevant
   tests/parametric/test_tracer.py::Test_TracerUniversalServiceTagging::test_tracer_service_name_environment_variable: "missing_feature (FIXME: library test client sets empty string as the service name)"
   tests/parametric/test_tracer_flare.py::TestTracerFlareV1: '>=0.2.1'  # Modified by easy win activation script
   tests/parametric/test_tracer_flare.py::TestTracerFlareV1::test_flare_log_level_order: missing_feature  # Created by easy win activation script
diff --git a/tests/parametric/test_tracer.py b/tests/parametric/test_tracer.py
index 7e8834f8b77..21be477630c 100644
--- a/tests/parametric/test_tracer.py
+++ b/tests/parametric/test_tracer.py
@@ -233,6 +233,25 @@ def test_tracer_no_srv_src_when_service_not_manually_set(
         assert root_span is not None, "Root span not found"
         assert "_dd.svc_src" not in root_span.get("meta", {})
 
+    def test_tracer_srv_src_inherited_on_child_span(self, test_agent: TestAgentAPI, test_library: APMLibrary) -> None:
+        """When a parent span has a manually set service name
+        A child span that inherits the same service should also have _dd.svc_src set to "m"
+        """
+        with (
+            test_library,
+            test_library.dd_start_span("parent", service="my-service") as parent,
+            test_library.dd_start_span("child", parent_id=parent.span_id),
+        ):
+            pass
+
+        traces = test_agent.wait_for_num_traces(1, sort_by_start=False)
+        trace = find_trace(traces, parent.trace_id)
+
+        child_span = next(s for s in trace if s["name"] == "child")
+        assert child_span["meta"].get("_dd.svc_src") == "m", (
+            f"Expected _dd.svc_src='m' on child span, got: {child_span['meta'].get('_dd.svc_src')!r}"
+        )
+
 
 @scenarios.parametric
 @features.base_service