> ## Documentation Index
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# PFAuthenticationServerLoginWithCustomIDRequest

> PFAuthenticationServerLoginWithCustomIDRequest data model. It is highly recommended that developers ensure that it is extremely unlikely that a customer could generate an ID which is already in use by another customer. If this is the first time a user has signed in with the Custom ID and CreateAccount is set to true, a new PlayFab account will be created and linked to the Custom ID. In this case, no email or username will be associated with the PlayFab account. Otherwise, if no PlayFab account is linked to the Custom ID, an error indicating this will be returned, so that the title can guide the user through creation of a PlayFab account.

PFAuthenticationServerLoginWithCustomIDRequest data model. It is highly recommended that developers ensure that it is extremely unlikely that a customer could generate an ID which is already in use by another customer. If this is the first time a user has signed in with the Custom ID and CreateAccount is set to true, a new PlayFab account will be created and linked to the Custom ID. In this case, no email or username will be associated with the PlayFab account. Otherwise, if no PlayFab account is linked to the Custom ID, an error indicating this will be returned, so that the title can guide the user through creation of a PlayFab account.

## Syntax

```cpp theme={null}
typedef struct PFAuthenticationServerLoginWithCustomIDRequest {  
    bool createAccount;  
    const char* customId;  
    PFStringDictionaryEntry const* customTags;  
    uint32_t customTagsCount;  
    PFGetPlayerCombinedInfoRequestParams const* infoRequestParameters;  
} PFAuthenticationServerLoginWithCustomIDRequest;  
```

### Members

**`createAccount`**   bool

Automatically create a PlayFab account if one is not currently linked to this ID.

**`customId`**   const char\*<br />*is null-terminated*

Custom unique identifier for the user, generated by the title.

**`customTags`**   PFStringDictionaryEntry const\*<br />*may be nullptr*

(Optional) The optional custom tags associated with the request (e.g. build number, external trace identifiers, etc.).

**`customTagsCount`**   uint32\_t

Count of customTags

**`infoRequestParameters`**   PFGetPlayerCombinedInfoRequestParams const\*<br />*may be nullptr*

(Optional) Flags for which pieces of info to return for the user.

## Requirements

**Header:** PFAuthenticationTypes.h

## See also

[PFAuthenticationTypes members](/services/playfab/api-references/c/pfauthenticationtypes/pfauthenticationtypes_members)