diff --git a/vscode-extensions/commons/commons-yaml/src/main/java/org/springframework/ide/vscode/commons/yaml/reconcile/YamlSchemaProblems.java b/vscode-extensions/commons/commons-yaml/src/main/java/org/springframework/ide/vscode/commons/yaml/reconcile/YamlSchemaProblems.java
index 1ed254951..3b4e4290f 100644
--- a/vscode-extensions/commons/commons-yaml/src/main/java/org/springframework/ide/vscode/commons/yaml/reconcile/YamlSchemaProblems.java
+++ b/vscode-extensions/commons/commons-yaml/src/main/java/org/springframework/ide/vscode/commons/yaml/reconcile/YamlSchemaProblems.java
@@ -76,8 +76,12 @@ public class YamlSchemaProblems {
 		return new ReconcileProblemImpl(SCHEMA_PROBLEM, msg, node.getStart(), node.getLength());
 	}
 
+	public static ReconcileProblem deprecatedProperty(String msg, Node node) {
+		return problem(DEPRECATED_PROPERTY, msg, node);
+	}
+
 	public static ReconcileProblem deprecatedProperty(Node node, YType bean, YTypedProperty property) {
-		return problem(DEPRECATED_PROPERTY, "Property '"+property.getName()+"' of '"+bean+"' is Deprecated", node);
+		return deprecatedProperty("Property '"+property.getName()+"' of '"+bean+"' is Deprecated", node);
 	}
 
 	public static ReconcileProblem problem(ProblemType problemType, String msg, Node node) {
@@ -85,4 +89,5 @@ public class YamlSchemaProblems {
 		int end = node.getEndMark().getIndex();
 		return new ReconcileProblemImpl(problemType, msg, start, end-start);
 	}
+
 }
diff --git a/vscode-extensions/commons/commons-yaml/src/main/java/org/springframework/ide/vscode/commons/yaml/schema/constraints/Constraints.java b/vscode-extensions/commons/commons-yaml/src/main/java/org/springframework/ide/vscode/commons/yaml/schema/constraints/Constraints.java
index b8a227e12..b719fabce 100644
--- a/vscode-extensions/commons/commons-yaml/src/main/java/org/springframework/ide/vscode/commons/yaml/schema/constraints/Constraints.java
+++ b/vscode-extensions/commons/commons-yaml/src/main/java/org/springframework/ide/vscode/commons/yaml/schema/constraints/Constraints.java
@@ -17,14 +17,19 @@ import static org.springframework.ide.vscode.commons.yaml.reconcile.YamlSchemaPr
 import java.util.Arrays;
 import java.util.List;
 import java.util.Set;
+import java.util.function.Function;
 
 import org.springframework.ide.vscode.commons.languageserver.reconcile.IProblemCollector;
 import org.springframework.ide.vscode.commons.util.Assert;
 import org.springframework.ide.vscode.commons.yaml.ast.NodeUtil;
+import org.springframework.ide.vscode.commons.yaml.reconcile.YamlSchemaProblems;
 import org.springframework.ide.vscode.commons.yaml.schema.YType;
 import org.yaml.snakeyaml.nodes.MappingNode;
+import org.yaml.snakeyaml.nodes.Node;
 import org.yaml.snakeyaml.nodes.NodeTuple;
 
+import com.google.common.collect.ImmutableSet;
+
 /**
  * Various static methods for constructing/composing {@link Constraint}s.
  *
@@ -78,4 +83,17 @@ public class Constraints {
 			}
 		}
 	}
+
+	public static Constraint deprecated(Function<String, String> messageFormatter, String... _deprecatedNames) {
+		Set<String> deprecatedNames = ImmutableSet.copyOf(_deprecatedNames);
+		return (MappingNode map, YType type, Set<String> foundProps, IProblemCollector problems) -> {
+			for (NodeTuple prop : map.getValue()) {
+				Node keyNode = prop.getKeyNode();
+				String name = NodeUtil.asScalar(keyNode);
+				if (deprecatedNames.contains(name)) {
+					problems.accept(YamlSchemaProblems.deprecatedProperty(messageFormatter.apply(name), keyNode));
+				}
+			}
+		};
+	}
 }
\ No newline at end of file
diff --git a/vscode-extensions/vscode-concourse/src/main/java/org/springframework/ide/vscode/concourse/PipelineYmlSchema.java b/vscode-extensions/vscode-concourse/src/main/java/org/springframework/ide/vscode/concourse/PipelineYmlSchema.java
index 22ba0d9f8..59b6f1b1f 100644
--- a/vscode-extensions/vscode-concourse/src/main/java/org/springframework/ide/vscode/concourse/PipelineYmlSchema.java
+++ b/vscode-extensions/vscode-concourse/src/main/java/org/springframework/ide/vscode/concourse/PipelineYmlSchema.java
@@ -222,8 +222,11 @@ public class PipelineYmlSchema implements YamlSchema {
 				if (parentImageDef==null) {
 					return Constraints.requireOneOf("image_resource", "image");
 				} else {
-					// TODO: something like this: return Constraints.deprecated("image_resource", "image");
-					return null;
+					return Constraints.deprecated((name) ->
+								"Deprecated: This attribute in the task config will be ignored! "+
+								"The 'image' attribute on the task itself takes precedence.",
+							"image_resource", "image"
+					);
 				}
 			} else {
 				return Constraints.requireAtMostOneOf("image_resource", "image");
diff --git a/vscode-extensions/vscode-concourse/src/test/java/org/springframework/ide/vscode/concourse/ConcourseEditorTest.java b/vscode-extensions/vscode-concourse/src/test/java/org/springframework/ide/vscode/concourse/ConcourseEditorTest.java
index aa0229f6c..f90b96bad 100644
--- a/vscode-extensions/vscode-concourse/src/test/java/org/springframework/ide/vscode/concourse/ConcourseEditorTest.java
+++ b/vscode-extensions/vscode-concourse/src/test/java/org/springframework/ide/vscode/concourse/ConcourseEditorTest.java
@@ -2565,6 +2565,38 @@ public class ConcourseEditorTest {
 		editor.assertProblems(/*NONE*/);
 	}
 
+	@Test public void resourceInEmbeddedTaskConfigDeprecated() throws Exception {
+		Editor editor = harness.newEditor(
+			"resources:\n" +
+			"- name: docker-image\n" +
+			"  type: docker-image\n" +
+			"  source:\n" +
+			"    username: {{docker_hub_username}}\n" +
+			"    password: {{docker_hub_password}}\n" +
+			"    repository: kdvolder/sts3-build-env\n" +
+			"jobs:\n" +
+			"- name: build-commons-update-site\n" +
+			"  plan:\n" +
+			"  - task: hello-world\n" +
+			"    image: docker-image\n" +
+			"    config:\n" +
+			"      image: blah\n" +
+			"      image_resource:\n" +
+			"        type: docker-image\n" +
+			"      inputs:\n" +
+			"      - name: commons-git\n" +
+			"      platform: linux\n" +
+			"      run:\n" +
+			"        path: which\n" +
+			"        args:\n" +
+			"        - mvn"
+		);
+		editor.assertProblems(
+				"image|Deprecated",
+				"image_resource|Deprecated"
+		);
+	}
+
 	@Ignore @Test public void relaxedIndentContextMoreSpaces() throws Exception {
 		Editor editor;