# 60365: Entity SID invalid or not provided

Log Type: APPLICATION

Log Level: ERROR

## Description

An Entity in Verify represents a user or other identity that needs verification. This error occurs when your request references an Entity by SID and that value is missing or does not match the expected `SID<YE>` format.

### Possible causes

* The request did not include the required Entity SID.
* The Entity SID is incorrectly formatted and does not match the expected `^YE[0-9a-fA-F]{32}$` pattern.
* The request used a different identifier, such as the Entity `identity` value or another resource SID, instead of the Entity SID. Verify treats `sid` and `identity` as separate fields.

### Possible solutions

* Include the correct Entity SID in the request field required by the endpoint you are calling.
* Verify that the SID starts with `YE`, is 34 characters long, and contains only hexadecimal characters after the prefix.
* If you only have the Entity `identity`, create or fetch the Entity first and then use the returned `sid` value in requests that require an Entity SID.

#### Additional resources

* [Entity Resource](/docs/verify/api/entity)
* [Factor Resource](/docs/verify/api/factor)
* [Challenge Resource](/docs/verify/api/challenge)