---
title: About the Cloud Platform Client pipelines
slug: '2555'
canonical_url: https://docs.coveo.com/en/2555/
collection: coveo-for-sitecore-v5
source_format: adoc
---
# About the Cloud Platform Client pipelines
## Pipelines

The pipelines defined in the `Coveo.CloudPlatformClient.config` file are mostly error handling pipelines.
The following table is a summary of all those pipelines.

[%header,cols="5"]
|===
|Pipeline
|Purpose
|Description
|Processors included by default
|Is typically customized?

|`indexingRestExceptionHandler`
|Handling indexing exceptions
|Amazon Lambda may throw exceptions when warming up or when receiving too many queries at once.
This pipeline handles these errors.
|`Coveo.CloudPlatformClient.Pipelines.WaitAndRetry`
|[x]

|`getSearchUserIdentities`
|Query processing
|This pipeline is used to add identities to users so that they can access more documents in their queries.
|`Coveo.CloudPlatformClient.Processors.GetSearchUserIdentities.AddAnonymousEmailUserIdentity`
|[x]
|===

## Processors

### WaitAndRetry

The wait and retry processor is used to wait and retry when an indexing call fails.
The table below lists its properties:

[%header,cols="3"]
|===
|Property name
|Description
|Default value

|`Interval`
|The interval between each retries in milliseconds (ms).
|2000

|`NumberOfRetry`
|The number of unsuccessful retries to perform before giving up.
|10

|`StatusCodes`
|The HTTP error code the processor is run for. For example, if the error code is 404, and `StatusCodes` doesn't specifies 404, the processor will **not** retry the HTTP call.
|429, 500, 503, 504
|===

### AddAnonymousEmailUserIdentity

The `AddAnonymousEmailUserIdentity` processor automatically adds the `anonymous` identity to your users, allowing them access to public documents indexed from external sources.

> **Note**
>
> Prior to the March 2021 release, the identity added by the `AddAnonymousEmailUserIdentity` processor was called `anonymous@anonymous`.

```xml
<getSearchUserIdentities>
    <!-- The AddAnonymousEmailUserIdentity allows to retrieve the public documents from the external sources. -->
    <processor name="AddAnonymousEmailUserIdentity" type="Coveo.CloudPlatformClient.Processors.GetSearchUserIdentities.AddAnonymousEmailUserIdentity, Coveo.CloudPlatformClient" />
</getSearchUserIdentities>
```