Diagnosis
The specified key length of the pool is too large. You probablyspecified further key fields in addition to the mandatory key fields ofthe pool or changed the standard setting for the length of theVARKEY field of the pool.
A pool has exactly two key fields. The first key field containsthe table names of the pooled table, the second key field (VARKEY) theprimary key fields of this table.

Procedure
Change the definition of the pool to correspond.
A pool must contain two key fields TABNAME (CHAR 10) and VARKEY(CHAR 110).