> For the complete documentation index, see [llms.txt](https://docs.apryse.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.apryse.com/core/get-started/faq/error-env-locale-configuration.md).

# Why am I seeing "An error was detected with your environment's locale configuration"?

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This error can occur on POSIX (Mac or Linux) systems when the configured locale is not actually available. This is known to happen by default on certain **AWS Lambda** runtimes.

## How can I fix this quickly?

Just set the `LC_ALL` environment variable to `"C"`. You can do this at the command line before running your program, from within your program, or if running on [AWS Lambda, from the configuration panel](https://docs.aws.amazon.com/lambda/latest/dg/configuration-envvars.html).

{% tabs %}
{% tab title="Bash" %}
{% code lineNumbers="true" %}

```bash
export LC_ALL=C
```

{% endcode %}
{% endtab %}

{% tab title="JavaScript" %}
{% code lineNumbers="true" %}

```js
process.env.LC_ALL = 'C';
```

{% endcode %}
{% endtab %}

{% tab title="Python" %}
{% code lineNumbers="true" %}

```python
import os

# ...

os.environ['LC_ALL'] = 'C'
```

{% endcode %}
{% endtab %}

{% tab title="Go" %}
{% code lineNumbers="true" %}

```go
import ("os")

// ...

os.Setenv("LC_ALL", "C")
```

{% endcode %}
{% endtab %}

{% tab title="Java" %}
{% code lineNumbers="true" %}

```java
System.setProperty("LC_ALL", "C");
```

{% endcode %}
{% endtab %}

{% tab title="C++" %}
{% code lineNumbers="true" %}

```cpp
#include <stdlib.h>

// ...
// POSIX only
setenv("LC_ALL", "C", 1 /*overwite existing value*/);
```

{% endcode %}
{% endtab %}

{% tab title="C#" %}
{% code lineNumbers="true" %}

```csharp
using System;

// ... 

Environment.SetEnvironmentVariable("LC_ALL", "C");
```

{% endcode %}
{% endtab %}

{% tab title="PHP" %}
{% code lineNumbers="true" %}

```php
putenv("LC_ALL=C");
```

{% endcode %}
{% endtab %}

{% tab title="VB" %}
{% code lineNumbers="true" %}

```vb
Environment.SetEnvironmentVariable("LC_ALL", "C")
```

{% endcode %}
{% endtab %}
{% endtabs %}

If you are setting this from within your program, make sure you do so **before** you make any calls to the Apryse SDK.

## Why does this happen?

This error occurs when one of the environment variables used to request a locale is set to a locale that is not present on the system. These variables are as follows:

* `LC_ALL`
* `LC_COLLATE`
* `LC_CTYPE`
* `LC_MESSAGES`
* `LC_MONETARY`
* `LC_NUMERIC`
* `LC_TIME`
* `LANG`

`LC_ALL` has the highest priority, so if it is set, it is used. `LANG` is used as a fallback, only if the other values are not set. You can search for the values of these, if set, using the following command:

{% tabs %}
{% tab title="Bash" %}
{% code lineNumbers="true" %}

```bash
env | grep -E 'LC_.*=|LANG.*='
```

{% endcode %}
{% endtab %}
{% endtabs %}

You can compare the values specified for each variable to the list of available locales:

{% tabs %}
{% tab title="Bash" %}
{% code lineNumbers="true" %}

```bash
locale -a
```

{% endcode %}
{% endtab %}
{% endtabs %}

If one of the required locales is not available, you should either set the environment variable to an available locale (as shown above), or if required, generate the locale (out of scope for this FAQ).


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