To work with the IFS Report Studio, it is a must that you are granted with the necessary permission sets first.
To design Report Studio – Designer layouts, you must be granted with the FND_DESIGNER_REPORT permission set. IFS Solution Manager is used for this purpose. Systems administrator or authorized personnel in a similar capacity is required to first set up the IFS Solution Manager and grant the permission sets.
Relevant permission sets are granted.
Define Relevant Permission Set for Report Studio