# AUTH_DESCRIPTOR_ID_PLACEHOLDER · FT4 Rell API · Chromia Docs (concept)

> val AUTH_ DESCRIPTOR_ ID_ PLACEHOLDER: text = "{auth_ descriptor_ id}" tag used in auth message construction which will be replaced with the authenticating

Source: https://docs.chromia.com/pages/ft4-rell/-f-t4-library/lib.ft4.core.auth/-a-u-t-h_-d-e-s-c-r-i-p-t-o-r_-i-d_-p-l-a-c-e-h-o-l-d-e-r/

PROPERTY

# AUTH\_DESCRIPTOR\_ID\_PLACEHOLDER

```signature
val AUTH_DESCRIPTOR_ID_PLACEHOLDER: text = "{auth_descriptor_id}"
```

[Source](https://gitlab.com/chromaway/ft4-lib/-/blob/development/rell/src/lib/ft4/core/auth/authentication.rell#lines-45)

tag used in auth message construction which will be replaced with the authenticating
auth descriptor ID

[View this page on docs.chromia.com](https://docs.chromia.com/pages/ft4-rell/-f-t4%20-library/lib.ft4.core.auth/-a-u-t-h_-d-e-s-c-r-i-p-t-o-r_-i-d_-p-l-a-c-e-h-o-l-d-e-r.html)Generated API reference, mirrored from the live docs