What is the issue you are facing?
CMS problems
CMS issues during configuration in Landscape Configurator
CMS checkin does not pick up file from inbox folder(s)
CMS import shows errors
CMS assembly shows errors
CMS import finished without error but does not lead to expected behaviour
CMS Deployment does not show expected result for a particular system in a track
CBS problems
How to start analyzing CBS issues?
CBS does not process requests
CBS reports a broken DC
CBS reports a broken DC, although the same DC in the NetWeaver Developer Studio is fine
The State of a Buildspace Remains in Privileged Mode
Import of Large Archives from the CMS Fails
Build Requests Fail With OutOfMemory Exceptions
No Build Log is Available
Import failed because CBS request queue has not become empty in time
DTR problems
DTR reports conflicts
DTR does not start
High Response Time While Browsing DTR
DII problems (NWDI related perspectives in NWDS)
Deletion of Development Component in NWDS does not work
Authorization problems when triggering activation in NWDS
Build request number is not available in activation request view
Sync of Large Archives in the Developer Studio Fails
My namespace prefixes are not available in NWDS
Unable to check in large files into DTR
NWDI and NWDS related Knowledge Base Articles
KBA 1551906 contains a collection of NWDI and NWDS related KBAs.
NWDI in SAP NetWeaver 7.0
CMS problems
How to start troubleshooting CMS?
Errors in Automatic Deployments to Runtime Systems
Propagation Request Release in Transport View Fails
Do you have a question? Visit the NWDI Forum of SAP Community 
If you have feedback on this guide, please leave a comment in the TSG blog
Take a look at the Guided Answer for NWDI