SYMPTOM:
When multiple projects are monitored by Strategy Enterprise Manager 9.x and one or more of the projects are unavailable, the following error message is seen:

Data loading has failed!
Login to project Strategy Tutorial unsuccessful. Project not found
A project is unavailable when the project is either:
STEPS TO REPRODUCE:


CAUSE:
Since one of the three monitored projects was in Request Idle state, the project was basically unavailable and consequently the data load failed.
However, the other two projects were available but the data loader did not load the statistics for those projects either. This is logged as an enhancement with Technology.
An important thing to note here is that the data load for multiple projects occurs in the order of the Project GUID. The three projects from our example above are ordered in ascending order of their Project GUID as seen below:
So the data load will first occur for My First Project, then for Strategy Tutorial and at last for Customer Analysis Module.
If 'My First Project' is set to Request/Full Idle, data load will fail for all three projects.
If 'Strategy Tutorial' is set to Request/Full Idle, data load will fail for 'Strategy Tutorial' and 'Customer Analysis Module' only.
If 'Customer Analysis Module' is set to Request/Full Idle, data load will fail only for 'Customer Analysis Module'.
In summary, data load occurs on the basis of Project GUIDs and hence will fail accordingly too.
ACTION:
Strategy will continue to investigate and post updates as soon as they are available.
WORKAROUND:
Remove the idle project from the Enterprise Manager list of projects to be monitored and perform the data load for the remaining projects. Alternately, un-idle the project and start a data load.