Request ID: e590eefc-04c7-4c64-a8ae-be2e561bda16 from Lead-D365

The error in the Timeline is consistent with a known limitation in the Dynamics 365 Unified Client Interface timeline control when the underlying query exceeds the maximum number of link-entities allowed.

When this happens, the timeline (and features like Highlights that rely on it) can fail to render and show a generic error such as “Something went wrong. Try refreshing,” while the network trace shows a 400 Bad Request with message Number of link entities in query exceeded maximum limit.

To mitigate this in the affected organization:

1. Request an increase of QueryLinkEntityLimit
   • Open a support ticket with Microsoft (through the standard Dynamics 365 support channel) for the Golden demo tenant.
   • Provide the organization URL (for example, orgcd3e224b.crm5.dynamics.com) and the request ID shown in the error.
   • Ask support to increase the QueryLinkEntityLimit setting for the organization.
   • Note: Increasing this limit affects all queries with many link-entities and can have some performance impact, though a small increase (by a few units) is typically acceptable.
2. Reduce link-entities by adjusting Timeline configuration
   • If custom activities and card forms are used in the Timeline:
     1. Open the form editor for the Lead entity.
     2. Double-click the Timeline section to open Timeline settings for UCI.
     3. On the Activities tab, in Additional Options, locate custom activities that use card forms.
     4. Change their selection to Select Card Form to disable the card form, which reduces link-entities in the query.
   • Optionally remove non-essential custom activities from the Timeline:
     1. In the same Timeline settings for UCI, go to the Activities tab.
     2. In Filter By, change from Show all to Show selected.
     3. Deselect custom activities that do not need to appear in the Timeline.

After either increasing QueryLinkEntityLimit or reducing the number of custom activities/card forms, refresh the Lead form and verify that the Timeline and Highlights load without error.

References:

• Timeline does not render and shows "Records could not be loaded"