IBM Cognos User Manual page 301

Procedure
To resolve the problem, click OK at the prompt to proceed with the incremental
update and click Cancel to set the PowerCube status to Invalid. You must then
Adopt the cube, to reset the status to OK.
TR1903
Incremental update of cube_name cannot proceed because of the status_name
status of an existing PowerCube.
Cognos Transformer has detected a condition that prevents it from proceeding with
an incremental update to a PowerCube.
For example, if you try to incrementally update a PowerCube while the cube is
being viewed in a reporting component, the update may fail and the cube status
may be reset to FAILED. If you then attempt to recreate the cube, Cognos
Transformer will not allow the operation because the cube may already contain
some of the data from the most recent increment. Reprocessing that increment
could result in some data being added to the cube twice.
Procedure
To resolve the problem, do one of the following:
v Revert to a backup copy of the model and its PowerCubes, saved prior to
v Adopt the existing cube and rerun the incremental update, having first
v Rebuild your cube using the combined data from all increments.
After you resolve the problem, you can proceed with new increments in the
normal way.
TR1907
Cognos Transformer cannot gain access to database database_name with signon
information <user ID, password>.
This warning message is generated when a database signon fails when using an
IQD data source. The cube may still generate successfully despite the warning.
Procedure
To resolve the problem, ensure that the Prompt for password box on the General
tab of the Signon property sheet is not selected during model creation.
TR2000
The main dimension is required in the PowerCube Group.
processing the most recent increment, and retry. When you see a second warning
indicating that the time stamps on the PowerCube and model do not match,
proceed with the update, accepting the risk that you might thereby duplicate
some of the cube data.
confirmed that, if the cube was open in another component, its data has not
changed.
Appendix C. IBM Cognos Transformer Error Messages
287