From 1cbf7bc011c4130b0bae66a924d7843713b97bcd Mon Sep 17 00:00:00 2001
From: Eunbin Son <thswlsqls@naver.com>
Date: Sat, 18 Jul 2026 14:45:34 +0900
Subject: [PATCH] Use normalized key when building getMap error message in
 DefaultConfigProperties

---
 .../spi/internal/DefaultConfigProperties.java          |  5 ++++-
 .../spi/internal/ConfigPropertiesTest.java             | 10 ++++++++++
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/sdk-extensions/autoconfigure-spi/src/main/java/io/opentelemetry/sdk/autoconfigure/spi/internal/DefaultConfigProperties.java b/sdk-extensions/autoconfigure-spi/src/main/java/io/opentelemetry/sdk/autoconfigure/spi/internal/DefaultConfigProperties.java
index f8818c015bd..7de128cadbb 100644
--- a/sdk-extensions/autoconfigure-spi/src/main/java/io/opentelemetry/sdk/autoconfigure/spi/internal/DefaultConfigProperties.java
+++ b/sdk-extensions/autoconfigure-spi/src/main/java/io/opentelemetry/sdk/autoconfigure/spi/internal/DefaultConfigProperties.java
@@ -226,7 +226,10 @@ public Map<String, String> getMap(String name) {
               String[] split = entry.split("=", 2);
               if (split.length != 2 || StringUtils.isNullOrEmpty(split[0])) {
                 throw new ConfigurationException(
-                    "Invalid map property: " + name + "=" + config.get(name));
+                    "Invalid map property: "
+                        + name
+                        + "="
+                        + config.get(ConfigUtil.normalizePropertyKey(name)));
               }
               return filterBlanksAndNulls(split);
             })
diff --git a/sdk-extensions/autoconfigure-spi/src/test/java/io/opentelemetry/sdk/autoconfigure/spi/internal/ConfigPropertiesTest.java b/sdk-extensions/autoconfigure-spi/src/test/java/io/opentelemetry/sdk/autoconfigure/spi/internal/ConfigPropertiesTest.java
index 4a119e600cc..9cac000cebc 100644
--- a/sdk-extensions/autoconfigure-spi/src/test/java/io/opentelemetry/sdk/autoconfigure/spi/internal/ConfigPropertiesTest.java
+++ b/sdk-extensions/autoconfigure-spi/src/test/java/io/opentelemetry/sdk/autoconfigure/spi/internal/ConfigPropertiesTest.java
@@ -173,6 +173,16 @@ void invalidMap() {
         .hasMessage("Invalid map property: map=a=1,=b");
   }
 
+  @Test
+  void invalidMapWithHyphenatedName() {
+    assertThatThrownBy(
+            () ->
+                DefaultConfigProperties.createFromMap(Collections.singletonMap("test-map", "a=1,b"))
+                    .getMap("test-map"))
+        .isInstanceOf(ConfigurationException.class)
+        .hasMessage("Invalid map property: test-map=a=1,b");
+  }
+
   @Test
   void invalidDuration() {
     assertThatThrownBy(