-8030: Column must be indexed 

Explanation:

  1. No index was created on the specified column.
  2. In a REFERENTIAL CONSTRAINT DEFINITION, the columns (REFERENCED COLUMN) must either designate the key of the table or columns which form an index defined with UNIQUE.

User Action:

Use a <QUERY statement> issued on the system table DOMAIN.IND_USES_COL to find out the existing indexes. Create the desired index, or do without the index.