# OH-Clarity-0057

### Description

When the user encounters **OH-Clarity-0057**, then following error message will appear:\
OH-Clarity-0057: Error occurred while getting 'o\_ohLastUpdate' for entity. 'o\_ohLastUpdate' attribute is not properly configured in end system as expected. configure 'o\_ohLastUpdate' field as per given in "Custom Field Configuration" section of Clarity system in Product Guide.

### Cause

When Clarity system is as target end point, the cause of this issue is that <code class="expression">space.vars.SITENAME</code> is not able to access field with 'o\_ohLastUpdate' API attribute Id or 'o\_ohLastUpdate' is not configured for an entity.

### Solution

<code class="expression">space.vars.SITENAME</code>'s prerequisite is to configure a custom field with API attribute Id with 'o\_ohLastUpdate' for an entity which needs to synchronize.\
The user can refer to [Prerequisites > Custom Field Configuration](https://docs.opshub.com/v7.215/connectors/clarity#custom-field-configuration).