503 - Service Unavailable
When deploying, the message "The request failed with HTTP status 503: Service Unavailable" appears. You may also receive a similar message
when you test the service from the Globals tab via the "Test" button adjacent to the Web service URL
The report server cannot open a connection to the report server database
When deploying, the message "The report server cannot open a connection to the report server database (rsReportServerDatabaseUnavailable)" appears.
Subscriptions - SQL Agent
If subscriptions are being published, the deployment will fail if the SQL Agent
service is not Started
External References
As objects are uploaded (i.e. at publish time) SSRS validates to make sure the references
entered actually exist (eg. the deployment will fail if a connection string contained
within a data source does not resolve)
Internal References
SSRS objects can also upload when references within the object do not resolve (eg.
if a report contains a dataset that doesn't exist in any of the folders the tool
is aware of, the tool cannot link the two and the publish will fail)
Subscriptions delivery (file) path
If the deployment fails due to the target delivery (file) path not being in UNC format - the error message
"A delivery error has occurred. ---> Microsoft.ReportingServices.Diagnostics.Utilities.InvalidExtensionParameter:
One of the extension parameters is not valid for the following reason:
The path is not valid. The path must conform to Uniform Naming Convention (UNC) format" is received
Deployment - Failure Due to Permissions
If the deployment fails due to permissions, and you are confident the account the
deployment is running under has sufficient access, it is likely that the user that
the deployment is running under does not have sufficient privileges because of Windows
UAC (User Access Control).
Deployment - Failure Due to Schema Version Conflict
If the deployment fails due to schema version conflict - the error message "The
definition of this report is not valid or supported by this version of Reporting
Services. The report definition may have been created with a later version of Reporting
Services, or contain content that is not well-formed or not valid based on Reporting
Services schemas" is received