Some users might be used to the full MARS client to access MARS. There are some limitations if you use the Access MARS service compared to the full MARS client

Some users might be used to the full MARS client to access MARS. There are some limitations if you use the Access MARS service compared to the full MARS client:

• You can only use retrieve or list verbs. compute, read, write... are not available
• You can only execute one action at the time
• You can not use multi-target using the keywords, only one final single file can be transferred at the end of the execution. See how to How to organise the output in separate files - Web API FAQ
  
• You can only access to the archived data (no fdb access)