Access denied to method processReport in…

Sometimes you can face this error even if you set up security policy properly:

The class that raised this error extends SRSReportDataProviderBase.

public class AnkPriceListDP extends SRSReportDataProviderBase
[SysEntryPointAttribute]
public void processReport()

The method is an entry point for the SysOperationProcess class.

The access to run this method is also checked in the SysOperationProcess class. I couldn’t set up the access exactly for this method. So I fixed the problem by granting access to execute this method in the privilege’s Permission.ServerMethods node.