RC/Migrator Alter strategy to convert a column from CHAR (10) to DATE type failed with 'RMA231E ERROR OCCURED DURING GENERATION OF LOAD CONTROL CARDS FOR TABLE ... MASK IS MISSING' error message during the Analysis of the strategy. Mask YYYY-MM-DD was specified for the column to convert when the Alter strategy was created.
Mask YYYY-MM-DD was not correct. It should be CCYY-MM-DD or CCYY.MM.DD or CCYY/MM/DD, YYYY cannot be used for year.
Some examples of valid masks for DATE conversion are:
YYMMDD YY/MM/DD CCYY/MM/DD CC - CENTURY
MMDDYY MM/DD/YY MM/DD/CCYY YY - YEAR
DDMMYY DD/MM/YY DD/YY/CCYY MM - MONTH
YYWWD YY.WW.D CCYY.WW.D WW - WEEK
. . . DD - DAY
. . .
etc... etc... etc... ANY DELIMETERS MAY BE USED.