SYMPTOM
On Strategy Developer 9.x, the following error is seen when users try to retrieve a history list message associated to a report services document.

Results for this message cannot be retrieved from Strategy Intelligence Server. This might be because the execution has failed. Please contact your administrator.
STEPS TO REPRODUCE

CAUSE
The history list message cannot be retrieved from Strategy Developer 9.x because the subscription is created with pre-generate export option set to 'HTML'. Also, the following project configuration is unchecked: Caching > subscription execution > "Keep document available for manipulation for History List Subscription only". The history list message gets created only in the specified HTML format. Because this setting is unchecked, Strategy Intelligence Server 9.x cannot generate the PDF format when Strategy Developer 9.x tries to retrieve the history list message.
More information about these settings can be obtained in the following Strategy Knowledge Base document:
KB20545: New governing subcategory under Project Configuration in MicroStrategy 9 – Subscription Execution

ACTION
Users should implement one of the actions below:
(OR)