Fix: “All Endpoints failed, cannot serve the request” When Saving CloudSense Line Items in a Salesforce Full Copy Sandbox (R37)

Error / Symptom

Error message (verbatim):

“Configurator Engine experienced an error: first of 1 error: All Endpoints failed, cannot serve the request”

Typical symptoms:

• Saving any line item configuration fails (including very simple products).
• The issue occurs regardless of product type (for example, GAM-served vs non-GAM-served).
• Other actions (such as availability checks) may still work.

Root Cause

The Salesforce Connected App “CloudSense Digital Fulfilment Application” is not correctly authorized/granted for the user(s) executing the save. As a result, calls that require the Configurator Engine authentication/authorization path fail and return the “All Endpoints failed” error.

This is an environment/access configuration issue commonly seen after Full Copy sandbox creation/refresh (rather than a product configuration problem).

Solution

Apply the following steps in Salesforce to explicitly pre-authorize the Connected App and grant the required users access.

1) Update the Connected App “Permitted Users” policy

1. In Salesforce, go to Setup → App Manager.
2. Find CloudSense Digital Fulfilment Application.
3. Open the app details and edit the app’s policies/settings.
4. Set Permitted Users to “Admin approved users are pre-authorized” (instead of “All users may self-authorize”).
5. Save the changes.

2) Explicitly grant access to the appropriate users (profiles/permission sets)

Because the app is now admin-pre-authorized, you must explicitly allow the intended users:

1. Go to Setup → Connected Apps → Manage Connected Apps.
2. Select CloudSense Digital Fulfilment Application.
3. Assign/allow the required Profiles (or use the appropriate Permission Set approach in your org) so that the affected users are authorized to use the app.

3) Retest saving line items

1. Log in as an affected user.
2. Re-open the sales order / configurator flow.
3. Attempt to Save the line items again.

Validation / Confirmation

The issue is resolved when:

• Line items save successfully without the error:
  • “Configurator Engine experienced an error: first of 1 error: All Endpoints failed, cannot serve the request”
• The same save works for multiple product configurations (including previously failing simple configurations).

Notes / Common Pitfalls

• After a sandbox refresh, Connected App authorization and access policies may not match production.
• If Permitted Users is set to admin pre-authorized but profiles/permission sets are not granted, users may still fail to authenticate for required backend calls.
• If the issue affects all line-item saves regardless of product type, it strongly suggests an environment/authentication/access problem rather than a product configuration issue.