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

> function require_ regular_ next_ operation() Verifies that the next operation is one that will make use of the auth operation that is
being called. Can onl

Source: https://docs.chromia.com/pages/ft4-rell/-f-t4-library/lib.ft4.core.auth/require_regular_next_operation/

FUNCTION

# require\_regular\_next\_operation

```signature
function require_regular_next_operation()
```

[Source](https://gitlab.com/chromaway/ft4-lib/-/blob/development/rell/src/lib/ft4/core/auth/module.rell#lines-574)

Verifies that the next operation is one that will make use of the auth operation that is
being called.

Can only be called from an operation, and it should only be called by auth operations.

Throws `"AUTH OP FORBIDDEN"` if the next operation is blacklisted or this is the last
operation in the transaction

**See Also**

* [is\_auth\_blacklisted\_operation](https://docs.chromia.com/pages/ft4-rell/-f-t4-library/lib.ft4.core.auth/is_auth_blacklisted_operation/) — for information on blacklisting operations
* [is\_auth\_op](https://docs.chromia.com/pages/ft4-rell/-f-t4-library/lib.ft4.core.auth/is_auth_op/) — for information on what is an auth operation

[View this page on docs.chromia.com](https://docs.chromia.com/pages/ft4-rell/-f-t4%20-library/lib.ft4.core.auth/require_regular_next_operation.html)Generated API reference, mirrored from the live docs