Can't view datatype from the Datastage designer.

Cannot find parameter file record DSMFParams in &UFD&

This problem happened when the DSMFParams file missing from the "$DSHOME/../Projects/" folder.

Resolution: Checked that DSMFParams file is changed to DSMFParam.old. The DSMFParams.old file is renamed to DSMFParams. You need to open a new designer session to overcome this issue.