-3020: Invalid length for this data type 

Explanation:

The specified length is not permitted for the data type.

User Action:

...

Choose a value between 1 and 254 (SQL mode ANSI) or between 1 and 8000 (SQLMODE INTERNAL and ORACLE or 1 and 4000 (SQLMODE DB2) for the length attribute of a CHAR-type column.

Choose a value between 1 and 38 for the precision of a FIXED- or FLOAT-type column.