Code review comment: `recognizeEntitiesActionResults.get(taskIndex)`  `recognizePiiEntitiesActionResults.get(taskIndex)` or `extractKeyPhrasesActionResults.get(taskIndex)` get the object from the sorted output. So there is no need to reorder the errors.

Code under review:
private AnalyzeBatchActionsResult toAnalyzeTasks(AnalyzeJobState analyzeJobState) {
        TasksStateTasks tasksStateTasks = analyzeJobState.getTasks();
        final List<TasksStateTasksEntityRecognitionPiiTasksItem> piiTasksItems =
            tasksStateTasks.getEntityRecognitionPiiTasks();
        final List<TasksStateTasksEntityRecognitionTasksItem> entityRecognitionTasksItems =
            tasksStateTasks.getEntityRecognitionTasks();
        final List<TasksStateTasksKeyPhraseExtractionTasksItem> keyPhraseExtractionTasks =
            tasksStateTasks.getKeyPhraseExtractionTasks();

        List<RecognizeEntitiesActionResult> recognizeEntitiesActionResults = new ArrayList<>();
        List<RecognizePiiEntitiesActionResult> recognizePiiEntitiesActionResults = new ArrayList<>();
        List<ExtractKeyPhrasesActionResult> extractKeyPhrasesActionResults = new ArrayList<>();
        if (!CoreUtils.isNullOrEmpty(entityRecognitionTasksItems)) {
            for (int i = 0; i < entityRecognitionTasksItems.size(); i++) {
                final TasksStateTasksEntityRecognitionTasksItem taskItem = entityRecognitionTasksItems.get(i);
                final RecognizeEntitiesActionResult actionResult = new RecognizeEntitiesActionResult();
                RecognizeEntitiesActionResultPropertiesHelper.setResult(actionResult,
                    toRecognizeEntitiesResultCollectionResponse(taskItem.getResults()));
                TextAnalyticsActionResultPropertiesHelper.setCompletedAt(actionResult,
                    taskItem.getLastUpdateDateTime());
                recognizeEntitiesActionResults.add(actionResult);
            }
        }
        if (!CoreUtils.isNullOrEmpty(piiTasksItems)) {
            for (int i = 0; i < piiTasksItems.size(); i++) {
                final TasksStateTasksEntityRecognitionPiiTasksItem taskItem = piiTasksItems.get(i);
                final RecognizePiiEntitiesActionResult actionResult = new RecognizePiiEntitiesActionResult();
                RecognizePiiEntitiesActionResultPropertiesHelper.setResult(actionResult,
                    toRecognizePiiEntitiesResultCollection(taskItem.getResults()));
                TextAnalyticsActionResultPropertiesHelper.setCompletedAt(actionResult,
                    taskItem.getLastUpdateDateTime());
                recognizePiiEntitiesActionResults.add(actionResult);
            }
        }
        if (!CoreUtils.isNullOrEmpty(keyPhraseExtractionTasks)) {
            for (int i = 0; i < keyPhraseExtractionTasks.size(); i++) {
                final TasksStateTasksKeyPhraseExtractionTasksItem taskItem = keyPhraseExtractionTasks.get(i);
                final ExtractKeyPhrasesActionResult actionResult = new ExtractKeyPhrasesActionResult();
                ExtractKeyPhrasesActionResultPropertiesHelper.setResult(actionResult,
                    toExtractKeyPhrasesResultCollection(taskItem.getResults()));
                TextAnalyticsActionResultPropertiesHelper.setCompletedAt(actionResult,
                    taskItem.getLastUpdateDateTime());
                extractKeyPhrasesActionResults.add(actionResult);
            }
        }

        final List<TextAnalyticsError> errors = analyzeJobState.getErrors();
        if (!CoreUtils.isNullOrEmpty(errors)) {
            for (TextAnalyticsError error : errors) {
                final String[] targetPair = parseActionErrorTarget(error.getTarget());
                final String taskName = targetPair[0];
                final Integer taskIndex = Integer.valueOf(targetPair[1]);
                final TextAnalyticsActionResult actionResult;
                if ("entityRecognitionTasks".equals(taskName)) {
                    actionResult = recognizeEntitiesActionResults.get(taskIndex);
                } else if ("entityRecognitionPiiTasks".equals(taskName)) {
                    actionResult = recognizePiiEntitiesActionResults.get(taskIndex);
                } else if ("keyPhraseExtractionTasks".equals(taskName)) {
                    actionResult = extractKeyPhrasesActionResults.get(taskIndex);
                } else {
                    throw logger.logExceptionAsError(new RuntimeException(
                        "Invalid task name in target reference, " + taskName));
                }

                TextAnalyticsActionResultPropertiesHelper.setIsError(actionResult, true);
                TextAnalyticsActionResultPropertiesHelper.setError(actionResult,
                    new com.azure.ai.textanalytics.models.TextAnalyticsError(
                        TextAnalyticsErrorCode.fromString(
                            error.getCode() == null ? null : error.getCode().toString()),
                        error.getMessage(), null));
            }
        }

        final AnalyzeBatchActionsResult analyzeBatchActionsResult = new AnalyzeBatchActionsResult();

        final RequestStatistics requestStatistics = analyzeJobState.getStatistics();
        TextDocumentBatchStatistics batchStatistics = null;
        if (requestStatistics != null) {
            batchStatistics = new TextDocumentBatchStatistics(
                requestStatistics.getDocumentsCount(), requestStatistics.getErroneousDocumentsCount(),
                requestStatistics.getValidDocumentsCount(), requestStatistics.getTransactionsCount()
            );
        }

        AnalyzeBatchActionsResultPropertiesHelper.setStatistics(analyzeBatchActionsResult, batchStatistics);
        AnalyzeBatchActionsResultPropertiesHelper.setRecognizeEntitiesActionResults(analyzeBatchActionsResult,
            IterableStream.of(recognizeEntitiesActionResults));
        AnalyzeBatchActionsResultPropertiesHelper.setRecognizePiiEntitiesActionResults(analyzeBatchActionsResult,
            IterableStream.of(recognizePiiEntitiesActionResults));
        AnalyzeBatchActionsResultPropertiesHelper.setExtractKeyPhrasesActionResults(analyzeBatchActionsResult,
            IterableStream.of(extractKeyPhrasesActionResults));
        return analyzeBatchActionsResult;
    }

Line commented on: TextAnalyticsActionResultPropertiesHelper.setIsError(actionResult, true);

Revised code:
private AnalyzeBatchActionsResult toAnalyzeTasks(AnalyzeJobState analyzeJobState) {
        TasksStateTasks tasksStateTasks = analyzeJobState.getTasks();
        final List<TasksStateTasksEntityRecognitionPiiTasksItem> piiTasksItems =
            tasksStateTasks.getEntityRecognitionPiiTasks();
        final List<TasksStateTasksEntityRecognitionTasksItem> entityRecognitionTasksItems =
            tasksStateTasks.getEntityRecognitionTasks();
        final List<TasksStateTasksKeyPhraseExtractionTasksItem> keyPhraseExtractionTasks =
            tasksStateTasks.getKeyPhraseExtractionTasks();

        List<RecognizeEntitiesActionResult> recognizeEntitiesActionResults = new ArrayList<>();
        List<RecognizePiiEntitiesActionResult> recognizePiiEntitiesActionResults = new ArrayList<>();
        List<ExtractKeyPhrasesActionResult> extractKeyPhrasesActionResults = new ArrayList<>();
        if (!CoreUtils.isNullOrEmpty(entityRecognitionTasksItems)) {
            for (int i = 0; i < entityRecognitionTasksItems.size(); i++) {
                final TasksStateTasksEntityRecognitionTasksItem taskItem = entityRecognitionTasksItems.get(i);
                final RecognizeEntitiesActionResult actionResult = new RecognizeEntitiesActionResult();
                RecognizeEntitiesActionResultPropertiesHelper.setResult(actionResult,
                    toRecognizeEntitiesResultCollectionResponse(taskItem.getResults()));
                TextAnalyticsActionResultPropertiesHelper.setCompletedAt(actionResult,
                    taskItem.getLastUpdateDateTime());
                recognizeEntitiesActionResults.add(actionResult);
            }
        }
        if (!CoreUtils.isNullOrEmpty(piiTasksItems)) {
            for (int i = 0; i < piiTasksItems.size(); i++) {
                final TasksStateTasksEntityRecognitionPiiTasksItem taskItem = piiTasksItems.get(i);
                final RecognizePiiEntitiesActionResult actionResult = new RecognizePiiEntitiesActionResult();
                RecognizePiiEntitiesActionResultPropertiesHelper.setResult(actionResult,
                    toRecognizePiiEntitiesResultCollection(taskItem.getResults()));
                TextAnalyticsActionResultPropertiesHelper.setCompletedAt(actionResult,
                    taskItem.getLastUpdateDateTime());
                recognizePiiEntitiesActionResults.add(actionResult);
            }
        }
        if (!CoreUtils.isNullOrEmpty(keyPhraseExtractionTasks)) {
            for (int i = 0; i < keyPhraseExtractionTasks.size(); i++) {
                final TasksStateTasksKeyPhraseExtractionTasksItem taskItem = keyPhraseExtractionTasks.get(i);
                final ExtractKeyPhrasesActionResult actionResult = new ExtractKeyPhrasesActionResult();
                ExtractKeyPhrasesActionResultPropertiesHelper.setResult(actionResult,
                    toExtractKeyPhrasesResultCollection(taskItem.getResults()));
                TextAnalyticsActionResultPropertiesHelper.setCompletedAt(actionResult,
                    taskItem.getLastUpdateDateTime());
                extractKeyPhrasesActionResults.add(actionResult);
            }
        }

        final List<TextAnalyticsError> errors = analyzeJobState.getErrors();
        if (!CoreUtils.isNullOrEmpty(errors)) {
            for (TextAnalyticsError error : errors) {
                final String[] targetPair = parseActionErrorTarget(error.getTarget());
                final String taskName = targetPair[0];
                final Integer taskIndex = Integer.valueOf(targetPair[1]);
                final TextAnalyticsActionResult actionResult;
                if ("entityRecognitionTasks".equals(taskName)) {
                    actionResult = recognizeEntitiesActionResults.get(taskIndex);
                } else if ("entityRecognitionPiiTasks".equals(taskName)) {
                    actionResult = recognizePiiEntitiesActionResults.get(taskIndex);
                } else if ("keyPhraseExtractionTasks".equals(taskName)) {
                    actionResult = extractKeyPhrasesActionResults.get(taskIndex);
                } else {
                    throw logger.logExceptionAsError(new RuntimeException(
                        "Invalid task name in target reference, " + taskName));
                }

                TextAnalyticsActionResultPropertiesHelper.setIsError(actionResult, true);
                TextAnalyticsActionResultPropertiesHelper.setError(actionResult,
                    new com.azure.ai.textanalytics.models.TextAnalyticsError(
                        TextAnalyticsErrorCode.fromString(
                            error.getCode() == null ? null : error.getCode().toString()),
                        error.getMessage(), null));
            }
        }

        final AnalyzeBatchActionsResult analyzeBatchActionsResult = new AnalyzeBatchActionsResult();

        final RequestStatistics requestStatistics = analyzeJobState.getStatistics();
        TextDocumentBatchStatistics batchStatistics = null;
        if (requestStatistics != null) {
            batchStatistics = new TextDocumentBatchStatistics(
                requestStatistics.getDocumentsCount(), requestStatistics.getErroneousDocumentsCount(),
                requestStatistics.getValidDocumentsCount(), requestStatistics.getTransactionsCount()
            );
        }

        AnalyzeBatchActionsResultPropertiesHelper.setStatistics(analyzeBatchActionsResult, batchStatistics);
        AnalyzeBatchActionsResultPropertiesHelper.setRecognizeEntitiesActionResults(analyzeBatchActionsResult,
            IterableStream.of(recognizeEntitiesActionResults));
        AnalyzeBatchActionsResultPropertiesHelper.setRecognizePiiEntitiesActionResults(analyzeBatchActionsResult,
            IterableStream.of(recognizePiiEntitiesActionResults));
        AnalyzeBatchActionsResultPropertiesHelper.setExtractKeyPhrasesActionResults(analyzeBatchActionsResult,
            IterableStream.of(extractKeyPhrasesActionResults));
        return analyzeBatchActionsResult;
    }