-5011: Missing index value specification 

Explanation:

If an <INDEX POS SPEC> is specified after a <DIR2 SPEC> in a <SELECT ORDERED statement>, a value must be specified for each column of the index.

User Action:

Use a <QUERY statement> issued on the system table DOMAIN.IND_USES_COL to find out the columns that form the specified index. Repeat the SQL statement with all required column values.