Refund post using quick post

I have a posting situation with Quick post, this post is successful randomly and I am having a hard time figuring out on what is wrong?

I am posting refund to student account. process. The cobol works fine in other instance. I populate the QUICK_POST_TBL before I call on this RemoteCall but the &POSTED returns a "N" or No Success and refunds are not posting

 RemoteCall("PSRCCBL", "PSCOBOLPROG", "SFPQKDRV", "BUSINESS_UNIT", &QCK_BUS_UNIT, "GRP_TIMESTAMP", &QCK_TIMESTAMP, "OPRID", &QCK_OPRID, "SF_REVERSAL_IND", &QCK_REVERSAL, "ITEM_TYPE_CD", &QCK_ITEM_TYPE, "POST_FLAG", &POSTED, "POST_DT", &POST_DATE, ERROR_WARN", &ERRWARN);