diff --git a/aws-opentelemetry-distro/src/amazon/opentelemetry/distro/_aws_metric_attribute_generator.py b/aws-opentelemetry-distro/src/amazon/opentelemetry/distro/_aws_metric_attribute_generator.py
index 40a4fd46b..93d13ee9b 100644
--- a/aws-opentelemetry-distro/src/amazon/opentelemetry/distro/_aws_metric_attribute_generator.py
+++ b/aws-opentelemetry-distro/src/amazon/opentelemetry/distro/_aws_metric_attribute_generator.py
@@ -12,7 +12,6 @@
     AWS_BEDROCK_KNOWLEDGE_BASE_ID,
     AWS_CLOUDFORMATION_PRIMARY_IDENTIFIER,
     AWS_KINESIS_STREAM_NAME,
-    AWS_LAMBDA_FUNCTION_ARN,
     AWS_LAMBDA_FUNCTION_NAME,
     AWS_LAMBDA_RESOURCEMAPPING_ID,
     AWS_LOCAL_OPERATION,
@@ -460,7 +459,6 @@ def _set_remote_type_and_identifier(span: ReadableSpan, attributes: BoundedAttri
         elif is_key_present(span, AWS_LAMBDA_FUNCTION_NAME):
             remote_resource_type = _NORMALIZED_LAMBDA_SERVICE_NAME + "::Function"
             remote_resource_identifier = _escape_delimiters(span.attributes.get(AWS_LAMBDA_FUNCTION_NAME))
-            cloudformation_primary_identifier = _escape_delimiters(span.attributes.get(AWS_LAMBDA_FUNCTION_ARN))
     elif is_db_span(span):
         remote_resource_type = _DB_CONNECTION_STRING_TYPE
         remote_resource_identifier = _get_db_connection(span)