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

# /alter/credential

```
URL: http://<db.host>:<db.port>/alter/credential
```

Alter the properties of an existing
[credential](../../concepts/credentials/).

## Input Parameter Description

<ParamField body="credential_name" type="string">
  Name of the credential to be altered. Must be an existing credential.
</ParamField>

<ParamField body="credential_updates_map" type="map of string to strings">
  Map containing the properties of the credential to be updated. Error if empty.

  <Expandable title="credential_updates_map">
    <ParamField body="type">
      New type for the credential.

      The supported values are:

      * aws\_access\_key
      * aws\_iam\_role
      * azure\_ad
      * azure\_oauth
      * azure\_sas
      * azure\_storage\_key
      * docker
      * gcs\_service\_account\_id
      * gcs\_service\_account\_keys
      * hdfs
      * kafka
    </ParamField>

    <ParamField body="identity">
      New user for the credential.
    </ParamField>

    <ParamField body="secret">
      New password for the credential.
    </ParamField>

    <ParamField body="schema_name">
      Updates the schema name.  If *schema\_name* doesn't exist, an error will be thrown. If *schema\_name* is empty, then the user's default schema will be used.
    </ParamField>
  </Expandable>
</ParamField>

<ParamField body="options" type="map of string to strings">
  Optional parameters.
</ParamField>

## Output Parameter Description

The Kinetica server embeds the endpoint response inside a standard response structure which contains status information and the actual response to the query.  Here is a description of the various fields of the wrapper:

<ResponseField name="status" type="String">
  'OK' or 'ERROR'
</ResponseField>

<ResponseField name="message" type="String">
  Empty if success or an error message
</ResponseField>

<ResponseField name="data_type" type="String">
  'alter\_credential\_response' or 'none' in case of an error
</ResponseField>

<ResponseField name="data" type="String">
  Empty string
</ResponseField>

<ResponseField name="data_str" type="JSON or String">
  This embedded JSON represents the result of the /alter/credential endpoint:

  <Expandable title="data_str">
    <ResponseField name="credential_name" type="string">
      Value of input parameter *credential\_name*.
    </ResponseField>

    <ResponseField name="info" type="map of string to strings">
      Additional information.
    </ResponseField>
  </Expandable>

  Empty string in case of an error.
</ResponseField>