Most common is the connection issue.
Try having a look at this SAP note:
1702625 - "Error invalid connection (mds 00004)” on converting the universe from BO 3.1 to BI 4.0
Also have a look at this blog, it will be a help:
Most common is the connection issue.
Try having a look at this SAP note:
1702625 - "Error invalid connection (mds 00004)” on converting the universe from BO 3.1 to BI 4.0
Also have a look at this blog, it will be a help: