FPEU0022W UNABLE TO RELEASE VIRTUAL STORAGE FROM SUBPOOL `<V2>`. FREEMAIN RETURN CODE: `<V1>`

Explanation
 An error occurred attempting to release virtual
storage.  
<V1> is the FREEMAIN return code.

<V2> is the SUBPOOL.

User response
 Rerun the job. If the problem recurs, contact IBM® support.