[MRELEASE-694] -SNAPSHOT is unexpectedly appended to version in branched pom.xml
diff --git a/maven-release-manager/src/main/java/org/apache/maven/shared/release/phase/MapVersionsPhase.java b/maven-release-manager/src/main/java/org/apache/maven/shared/release/phase/MapVersionsPhase.java
index 8f4517d..700f53d 100644
--- a/maven-release-manager/src/main/java/org/apache/maven/shared/release/phase/MapVersionsPhase.java
+++ b/maven-release-manager/src/main/java/org/apache/maven/shared/release/phase/MapVersionsPhase.java
@@ -281,7 +281,7 @@
                     {
                         throw new ReleaseExecutionException( e.getMessage(), e );
                     }
-               }
+                }
 
                 if ( releaseDescriptor.isInteractive() )
                 {
@@ -295,10 +295,18 @@
 
                   //@todo validate next version, maybe with DefaultArtifactVersion
                 }
-                else
+                else if ( defaultVersion == null )
                 {
                     nextVersion = suggestedVersion;
                 }
+                else if ( convertToSnapshot )
+                {
+                    throw new ReleaseExecutionException( defaultVersion + " is invalid, expected a snapshot" );
+                }
+                else
+                {
+                    throw new ReleaseExecutionException( defaultVersion + " is invalid, expected a non-snapshot" );
+                }
             }
         }
         catch ( PrompterException e )
diff --git a/maven-release-manager/src/test/java/org/apache/maven/shared/release/phase/MapVersionsPhaseTest.java b/maven-release-manager/src/test/java/org/apache/maven/shared/release/phase/MapVersionsPhaseTest.java
index 36e98bb..338d979 100644
--- a/maven-release-manager/src/test/java/org/apache/maven/shared/release/phase/MapVersionsPhaseTest.java
+++ b/maven-release-manager/src/test/java/org/apache/maven/shared/release/phase/MapVersionsPhaseTest.java
@@ -2139,6 +2139,79 @@
         // test
         phase.execute( ReleaseUtils.buildReleaseDescriptor( builder ), new DefaultReleaseEnvironment(), reactorProjects );
     }
+    
+    @Test
+    public void testUpdateBranchInvalidDefaultReleaseVersion_NonInteractive()
+        throws Exception
+    {
+        // prepare
+        ReleasePhase phase = (MapVersionsPhase) lookup( ReleasePhase.class, TEST_MAP_BRANCH_VERSIONS );
+
+        List<MavenProject> reactorProjects = Collections.singletonList( createProject( "bar", "1.11-SNAPSHOT" ) );
+
+        ReleaseDescriptorBuilder builder = new ReleaseDescriptorBuilder();
+        builder.setDefaultReleaseVersion( "3.0" );
+        builder.setInteractive( false );
+        builder.setUpdateBranchVersions( true );
+
+        // test
+        try {
+            phase.execute( ReleaseUtils.buildReleaseDescriptor( builder ), new DefaultReleaseEnvironment(), reactorProjects );
+            fail( "Should fail due to invalid version" );
+        }
+        catch( ReleaseExecutionException e )
+        {
+            assertEquals( "3.0 is invalid, expected a snapshot", e.getMessage() );
+        }
+    }
+    
+    @Test
+    public void testUpdateReleaseInvalidDefaultReleaseVersion_NonInteractive()
+        throws Exception
+    {
+        // prepare
+        ReleasePhase phase = (MapVersionsPhase) lookup( ReleasePhase.class, TEST_MAP_RELEASE_VERSIONS );
+
+        List<MavenProject> reactorProjects = Collections.singletonList( createProject( "bar", "1.11-SNAPSHOT" ) );
+
+        ReleaseDescriptorBuilder builder = new ReleaseDescriptorBuilder();
+        builder.setDefaultReleaseVersion( "3.0-SNAPSHOT" );
+        builder.setInteractive( false );
+
+        // test
+        try {
+            phase.execute( ReleaseUtils.buildReleaseDescriptor( builder ), new DefaultReleaseEnvironment(), reactorProjects );
+            fail( "Should fail due to invalid version" );
+        }
+        catch( ReleaseExecutionException e )
+        {
+            assertEquals( "3.0-SNAPSHOT is invalid, expected a non-snapshot", e.getMessage() );
+        }
+    }
+    
+    @Test
+    public void testUpdateDevelopmentInvalidDefaultDevelopmentVersion_NonInteractive()
+        throws Exception
+    {
+        // prepare
+        ReleasePhase phase = (MapVersionsPhase) lookup( ReleasePhase.class, TEST_MAP_DEVELOPMENT_VERSIONS );
+
+        List<MavenProject> reactorProjects = Collections.singletonList( createProject( "bar", "1.11-SNAPSHOT" ) );
+
+        ReleaseDescriptorBuilder builder = new ReleaseDescriptorBuilder();
+        builder.setDefaultDevelopmentVersion( "3.0" );
+        builder.setInteractive( false );
+
+        // test
+        try {
+            phase.execute( ReleaseUtils.buildReleaseDescriptor( builder ), new DefaultReleaseEnvironment(), reactorProjects );
+            fail( "Should fail due to invalid version" );
+        }
+        catch( ReleaseExecutionException e )
+        {
+            assertEquals( "3.0 is invalid, expected a snapshot", e.getMessage() );
+        }
+    }
 
     private static MavenProject createProject( String artifactId, String version )
     {
diff --git a/maven-release-plugin/src/it/projects/branch/MRELEASE-694/pom.xml b/maven-release-plugin/src/it/projects/branch/MRELEASE-694/pom.xml
new file mode 100644
index 0000000..e84c5ea
--- /dev/null
+++ b/maven-release-plugin/src/it/projects/branch/MRELEASE-694/pom.xml
@@ -0,0 +1,77 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ Licensed to the Apache Software Foundation (ASF) under one
+  ~ or more contributor license agreements.  See the NOTICE file
+  ~ distributed with this work for additional information
+  ~ regarding copyright ownership.  The ASF licenses this file
+  ~ to you under the Apache License, Version 2.0 (the
+  ~ "License"); you may not use this file except in compliance
+  ~ with the License.  You may obtain a copy of the License at
+  ~
+  ~   http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing,
+  ~ software distributed under the License is distributed on an
+  ~ "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  ~ KIND, either express or implied.  See the License for the
+  ~ specific language governing permissions and limitations
+  ~ under the License.
+  -->
+
+    <!--
+    Licensed to the Apache Software Foundation (ASF) under one
+    or more contributor license agreements.  See the NOTICE file
+    distributed with this work for additional information
+    regarding copyright ownership.  The ASF licenses this file
+    to you under the Apache License, Version 2.0 (the
+    "License"); you may not use this file except in compliance
+    with the License.  You may obtain a copy of the License at
+
+        http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing,
+    software distributed under the License is distributed on an
+    "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+    KIND, either express or implied.  See the License for the
+    specific language governing permissions and limitations
+    under the License.
+    -->
+
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+
+  <groupId>org.apache.maven.plugin.release.it</groupId>
+  <artifactId>mrelease-694</artifactId>
+  <version>1.0-SNAPSHOT</version>
+  
+  <scm>
+    <connection>scm:dummy|nul</connection>
+    <developerConnection>scm:dummy|nul</developerConnection>
+  </scm>
+
+  <build>
+    <plugins>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-release-plugin</artifactId>
+        <version>2.4.2</version>
+        <configuration>
+          <autoVersionSubmodules>true</autoVersionSubmodules>
+          <updateBranchVersions>true</updateBranchVersions>
+          <updateWorkingCopyVersions>true</updateWorkingCopyVersions>
+          <updateDependencies>true</updateDependencies>
+          <pushChanges>true</pushChanges>
+          <remoteTagging>false</remoteTagging>
+          <suppressCommitBeforeBranch>false</suppressCommitBeforeBranch>
+        </configuration>
+        <dependencies>
+          <dependency>
+            <groupId>org.apache.maven.its.release</groupId>
+            <artifactId>maven-scm-provider-dummy</artifactId>
+            <version>1.0</version>
+          </dependency>
+        </dependencies>
+      </plugin>
+    </plugins>
+  </build>
+</project>
\ No newline at end of file
diff --git a/maven-release-plugin/src/it/projects/branch/MRELEASE-694/test.properties b/maven-release-plugin/src/it/projects/branch/MRELEASE-694/test.properties
new file mode 100644
index 0000000..38e8076
--- /dev/null
+++ b/maven-release-plugin/src/it/projects/branch/MRELEASE-694/test.properties
@@ -0,0 +1,21 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+# 
+#   http://www.apache.org/licenses/LICENSE-2.0
+# 
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+branchName=RELEASE-2.6.0
+developmentVersion=2.6.1-DEV-SNAPSHOT
+releaseVersion=2.6.0-BRANCH-SNAPSHOT
+updateVersionsToSnapshot=false 
+dryRun=true
\ No newline at end of file
diff --git a/maven-release-plugin/src/it/projects/branch/MRELEASE-694/verify.groovy b/maven-release-plugin/src/it/projects/branch/MRELEASE-694/verify.groovy
new file mode 100644
index 0000000..8d7f901
--- /dev/null
+++ b/maven-release-plugin/src/it/projects/branch/MRELEASE-694/verify.groovy
@@ -0,0 +1,27 @@
+
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+def projectBranch = new XmlSlurper().parse( new File( basedir, "pom.xml.branch" ) )
+assert projectBranch.version.text() == "2.6.0-BRANCH-SNAPSHOT"
+
+def projectNext = new XmlSlurper().parse( new File( basedir, "pom.xml.next" ) )
+assert projectNext.version.text() == "2.6.1-DEV-SNAPSHOT"
+
+return true
\ No newline at end of file