vault/website/content/docs/auth/saml/troubleshoot-adfs/bad-mapping.mdx

---
layout: docs
page_title: "Troubleshoot ADFS and SAML: automatic group mapping fails"
description: >-
  Fix connection problems in Vault due to a bad mapping between groups and
  policies when using Active Directory Federation Services (ADFS) as an SAML
  provider.
---

> [!IMPORTANT]  
> **Documentation Update:** Product documentation, which were located in this repository under `/website`, are now located in [`hashicorp/web-unified-docs`](https://github.com/hashicorp/web-unified-docs), colocated with all other product documentation. Contributions to this content should be done in the `web-unified-docs` repo, and not this one. Changes made to `/website` content in this repo will not be reflected on the developer.hashicorp.com website.

# Automatic group mapping fails

Troubleshoot problems where the debugging data suggests a bad or nonexistent
mapping between your Vault role and AD FS the Claim Issuance Policy.



## Example debugging data

<CodeBlockConfig hideClipboard highlight="14,16,21">

```json
[DEBUG] auth.saml.auth_saml_1d2227e7: validating user context for role: api=callback role_name=default-saml
role="{
  "token_bound_cidrs":null,
  "token_explicit_max_ttl":0,
  "token_max_ttl":0,
  "token_no_default_policy":false,
  "token_num_uses":0,
  "token_period":0,
  "token_policies":["default"],
  "token_type":0,
  "token_ttl":0,
  "BoundSubjects":["*@example.com","*@ext.example.com"],
  "BoundSubjectsType":"glob",
  "BoundAttributes":{"http://schemas.xmlsoap.org/claims/Group":["VaultAdmin","VaultUser"]},
  "BoundAttributesType":"string",
  "GroupsAttribute":"groups"
  }"
user context="{
  "attributes":
  {
    "http://schemas.xmlsoap.org/claims/Group":["Domain Users","VaultAdmin"],
    "http://schemas.xmlsoap.org/ws/2005/05/identity/claims/emailaddress":["rs@example.com"]
  },
  "subject":"rs@example.com"
}"
```

</CodeBlockConfig>



## Analysis

Use `vault read` to review the current role configuration:

<CodeBlockConfig hideClipboard highlight="5,9">

```shell-session
$ vault read auth/<SAML_PLUGIN_PATH>/role/<ADFS_ROLE>

Key                        Value
---                        -----
bound_attributes           map[http://schemas.xmlsoap.org/claims/Group:[VaultAdmin VaultUser]]
bound_attributes_type      string
bound_subjects             [*@example.com *@ext.example.com]
bound_subjects_type        glob
groups_attribute           groups
token_bound_cidrs          []
token_explicit_max_ttl     0s
token_max_ttl              0s
token_no_default_policy    false
token_num_uses             0
token_period               0s
token_policies             [default]
token_ttl                  0s
token_type                 default
```

</CodeBlockConfig>

The Vault role uses `groups` for the group attribute, so Vault expects user
context in the SAML response to include a `groups` attribute with the form:

<CodeBlockConfig hideClipboard>

```text
user context="{
  "attributes":
  {
    "groups":[<LIST_OF_BOUND_GROUPS>]",
    ...
  }
}"
```
</CodeBlockConfig>

But the SAML response indicates the Claim Issuance Policy uses `Group` for the
group attribute, so the user context uses `Group` to key the bound groups:


<CodeBlockConfig hideClipboard>

```text
user context="{
  "attributes":
  {
    "http://schemas.xmlsoap.org/claims/Group":["Domain Users","VaultAdmin"],
    ...
  },
  "subject":"rs@example.com"
}"
```

</CodeBlockConfig>



## Solution

<Tabs>

<Tab heading="Option 1: Use 'Group' in the Vault role">

The first option to resolve the problem is update `group_attribute` for the
Vault role to use `Group`:

```shell-session
$ vault write auth/<SAML_PLUGIN_PATH>/role/<ADFS_ROLE> \
    groups_attribute=http://schemas.xmlsoap.org/claims/Group
```

For example:

<CodeBlockConfig hideClipboard>

```shell-session
$ vault write auth/saml/role/adfs-default \
    groups_attribute=http://schemas.xmlsoap.org/claims/Group
```

</CodeBlockConfig>

</Tab>

<Tab heading="Option 2: Use 'groups' for AD FS">

The second option to resolve the problem is to update your AD FS configuration
to use `groups` and confirm the bound attributes in Vault match the expected
groups:

1. Update your AD FS the Claim Issuance Policy to use `groups` for unqualified
   names:

    | LDAP attribute                     | Outgoing claim type
    |------------------------------------|--------------------
    | `Token-Groups - Unqualified Names` | `groups`

1. Verify the bound attribute for your Vault role match the groups listed in the
   SAML response:

    ```shell-session
    $ vault write auth/<SAML_PLUGIN_PATH>/role/<ADFS_ROLE> \
        bound_attributes=groups="<AD_GROUP_LIST>"
    ```

    For example:

    <CodeBlockConfig hideClipboard>

    ```shell-session
    $ vault write auth/saml/role/default-adfs \
        bound_attributes=groups="VaultAdmin,VaultUser"
    ```

    </CodeBlockConfig>

</Tab>
</Tabs>



## Additional resources

- [SAML auth method Documentation](/vault/docs/auth/saml)
- [SAML API Documentation](/vault/api-docs/auth/saml)
- [Set up an AD FS lab environment](https://learn.microsoft.com/en-us/windows-server/identity/ad-fs/operations/set-up-an-ad-fs-lab-environment)