SID error with Query Execution

I am executing a query and receiving the following error:

Abort SID 2 for characteristic ZSLSREG could not be converted CL_RSDM_READ_MAST

Abort system error in program SAPLRRK0 and form MEGA_SORT_02-02

The ZSLS InfoObject is a text InfoObject only and contains 47 lines of text. However, when I look into the SID table /BIC/SZSLSREG, I don't see the X's that I see in other InfoObjects, in the DATAFL & INCFL fields.

This query has several other custom objects that work fine. And they all have X's in their SID table.

This query with this object works in our development system, but I am having trouble in our test system. I have retransported the InfoObject again too the test system, but still receive the same error message.

Any help greatly appreciated. Keith J