diff --git a/greenfield-apps/src/test/java/org/verapdf/apps/test/MultithreadingTest.java b/greenfield-apps/src/test/java/org/verapdf/apps/test/MultithreadingTest.java
index 28e5a2ec..f53dd3e7 100644
--- a/greenfield-apps/src/test/java/org/verapdf/apps/test/MultithreadingTest.java
+++ b/greenfield-apps/src/test/java/org/verapdf/apps/test/MultithreadingTest.java
@@ -9,6 +9,7 @@
 import java.io.File;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.Set;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
 import java.util.concurrent.Future;
@@ -29,7 +30,7 @@ public void shouldCreateXmlReportsInGivenDirectory() throws Exception {
 
 		int numberOfThreads = 4;
 
-		List<Future<ValidationResult>> futureResult = startValidation(fileToValidate, numberOfThreads);
+		List<Future<List<ValidationResult>>> futureResult = startValidation(fileToValidate, numberOfThreads);
 		List<ValidationResult> validationResults = getValidationResult(futureResult);
 
 		boolean isExpectedResults = compareResultsFromDifferentThreads(validationResults);
@@ -52,21 +53,21 @@ private boolean compareResultsFromDifferentThreads(List<ValidationResult> valida
 		return isExpectedResults;
 	}
 
-	private List<ValidationResult> getValidationResult(List<Future<ValidationResult>> results) throws InterruptedException, java.util.concurrent.ExecutionException {
+	private List<ValidationResult> getValidationResult(List<Future<List<ValidationResult>>> results) throws InterruptedException, java.util.concurrent.ExecutionException {
 		List<ValidationResult> validationResults = new ArrayList<>();
-		for (Future<ValidationResult> result : results) {
-			ValidationResult validationResult = result.get();
-			validationResults.add(validationResult);
+		for (Future<List<ValidationResult>> result : results) {
+			List<ValidationResult> validationResult = result.get();
+			validationResults.addAll(validationResult);
 		}
 		return validationResults;
 	}
 
-	private List<Future<ValidationResult>> startValidation(File fileToValidate, int numberOfThreads) {
-		List<Future<ValidationResult>> futureResult = new ArrayList<>();
+	private List<Future<List<ValidationResult>>> startValidation(File fileToValidate, int numberOfThreads) {
+		List<Future<List<ValidationResult>>> futureResult = new ArrayList<>();
 		ExecutorService executor = Executors.newFixedThreadPool(numberOfThreads);
 		for (int i = 0; i < numberOfThreads; i++) {
 			CallableValidatorForTest validator = new CallableValidatorForTest(fileToValidate);
-			Future<ValidationResult> submit = executor.submit(validator);
+			Future<List<ValidationResult>> submit = executor.submit(validator);
 			futureResult.add(submit);
 		}
 		return futureResult;
diff --git a/greenfield-apps/src/test/java/org/verapdf/pdfa/validation/validators/test/CallableValidatorForTest.java b/greenfield-apps/src/test/java/org/verapdf/pdfa/validation/validators/test/CallableValidatorForTest.java
index c2e91dad..d07078ae 100644
--- a/greenfield-apps/src/test/java/org/verapdf/pdfa/validation/validators/test/CallableValidatorForTest.java
+++ b/greenfield-apps/src/test/java/org/verapdf/pdfa/validation/validators/test/CallableValidatorForTest.java
@@ -7,9 +7,10 @@
 
 import java.io.File;
 import java.io.FileInputStream;
+import java.util.List;
 import java.util.concurrent.Callable;
 
-public class CallableValidatorForTest implements Callable<ValidationResult> {
+public class CallableValidatorForTest implements Callable<List<ValidationResult>> {
 	private final File fileToValidate;
 
 	public CallableValidatorForTest(File fileToValidate) {
@@ -17,12 +18,12 @@ public CallableValidatorForTest(File fileToValidate) {
 	}
 
 	@Override
-	public ValidationResult call() throws Exception {
-		ValidationResult result;
+	public List<ValidationResult> call() throws Exception {
+		List<ValidationResult> result;
 		try (FileInputStream fis = new FileInputStream(this.fileToValidate);
 				PDFAParser parser = Foundries.defaultInstance().createParser(fis); 
 				PDFAValidator validator = Foundries.defaultInstance().createValidator(parser.getFlavour(), false)) {
-			result = validator.validate(parser);
+			result = validator.validateAll(parser);
 		}
 		return result;
 	}
diff --git a/gui/src/main/java/org/verapdf/cli/VeraPdfCliProcessor.java b/gui/src/main/java/org/verapdf/cli/VeraPdfCliProcessor.java
index 57cb6f37..27902a66 100644
--- a/gui/src/main/java/org/verapdf/cli/VeraPdfCliProcessor.java
+++ b/gui/src/main/java/org/verapdf/cli/VeraPdfCliProcessor.java
@@ -21,6 +21,7 @@
 import org.verapdf.cli.CliConstants.ExitCodes;
 import org.verapdf.cli.commands.VeraCliArgParser;
 import org.verapdf.core.VeraPDFException;
+import org.verapdf.pdfa.results.ValidationResult;
 import org.verapdf.policy.PolicyChecker;
 import org.verapdf.processor.*;
 import org.verapdf.processor.app.ConfigManager;
@@ -183,8 +184,11 @@ private ExitCodes processStream(final ItemDetails item, final InputStream toProc
 
 				if (result.isPdf() && !result.isEncryptedPdf()) {
 					ProcessorFactory.writeSingleResultReport(result, handler, processorConfig);
-					if (!result.getValidationResult().isCompliant()) {
-						retVal = ExitCodes.INVALID;
+					for (ValidationResult validationResult : result.getValidationResults()) {
+						if (!validationResult.isCompliant()) {
+							retVal = ExitCodes.INVALID;
+							break;
+						}
 					}
 				} else {
 					String message = String.format(