COBCH2359 COBOL data-names starting with digits cannot be used with JAVA-SHAREABLE

A data item that has a name starting with a numeric has been specified within a JAVA-SHAREABLE block.

Items within a JAVA-SHAREABLE block must start with an alphabetic character.

       program-id. "demo".
       ...
       working-storage section.
       >>JAVA-SHAREABLE ON 
          01 i1 pic 9(5) comp-5 value 88888889. 
          03 2i pic x(10).      *> name cannot start with numeric                
       >>JAVA-SHAREABLE OFF
       ...