%1 not defined as level-01 or level-77 item in LINKAGE SECTION. Ignored.
30
Cause . . . . . : A name must be defined in the LINKAGE SECTION if it is used in a PROCEDURE DIVISION USING header. The item must not be part of a group item.
Recovery . . . : Move the definition of the data-name into the LINKAGE SECTION (if it is not already there). If it is a group item, make sure that only the level-01 data-name is in the USING header.