---
title: "Troubleshoot common issues"
slug: "clovaspeech-troubleshoot-common"
updated: 2026-09-17T09:33:50Z
published: 2026-09-17T09:33:50Z
canonical: "guide.ncloud-docs.com/clovaspeech-troubleshoot-common"
stale: true
---

> ## Documentation Index
> Fetch the complete documentation index at: https://guide.ncloud-docs.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Troubleshoot common issues

Available in Classic and VPC

You might run into the following problems when using CLOVA Speech. Find out causes and possible solutions.

## Security issues

Are there any security issues with the files uploaded to Object Storage and the data created in CLOVA Speech?

#### Causes and solutions

NAVER Cloud Platform does not access to your data. For more information, see [CLOVA Speech terms of service](https://www.ncloud.com/policy/terms/clsph).

## Degraded voice recognition accuracy

The accuracy of voice recognition is degraded.

#### Cause

If the file format is not supported, the accuracy may be degraded.

#### Solution

Check if the format of the voice file meets the format that CLOVA Speech supports. For more information, see [Scope of support](/docs/en/clovaspeech-spec#%EC%A7%80%EC%9B%90%EB%B2%94%EC%9C%84).

## Increase domain limit

I cannot create any more domains. I would like to increase the limit for the number of domains.

#### Causes and solutions

- If you are a corporate customer, request the domain limit increase in the **Service Quota** service.
- If you are an individual customer, request to [Customer Support](https://www.ncloud.com/support/question/service).

## Speaker separation during live streaming

I am using CLOVA Speech gRPC to call APIs in live streaming, and the "speaker" (speaker separation) result is not created.

#### Cause

Only long sentence recognition supports speaker separation. In live streaming, speaker separation is not available.

#### Solution

As explained in the cause section, it is a normal operation and it does not need any action. To use the speaker separation feature, use the long sentence recognition API.

## English recognition errors

When I request a recognition task in the long sentence recognition service, it does not recognize it if there are English words in the sentence.

#### Cause

When the recognition language is set to Korean, English may not be recognized.

#### Solution

- When requesting a recognition task in the builder, change the **Language setting** to **Korean/English simultaneous recognition**.
- When calling APIs, change `params.lang` to `enko`, then call. For more information, see [Long sentence recognition](https://api.ncloud-docs.com/docs/en/ai-application-service-clovaspeech-longsentence).

              Note

              

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