There is no official guidelines but that does not prohibit the OC from including in the management agreement some sort of minimum requirement for reporting.
The EC should probably not expect a detailed income and expenditure report because that takes time for the SM to prepare and that will cost the OC in management fees but if you feel there is a need for it then pass a resolution at an EC meeting to ask for it. Keep in mind the SM is the employee of the OC so do not be afraid to set your employee a task that is within his capability.
Best bet is to ask for a more detailed report but ask about the extra cost before making any commitment to requesting it and make sure the OC is aware the EC is pursuing the matter as it will come at a cost and the OC may decide they do not want the EC adding such a cost, i.e. put it on an EC meeting agenda, be transparent about it, and the OC can veto it if they do not want the EC pursuing the matter.