Placement: If the REPLACE statement is the last control statement in the SYSLIN data set, and there are unresolved external references to be resolved from SYSLIB, the linkage editor causes the REPLACE service to operate on the first module from SYSLIB by an automatic library call.

When a control section containing unresolved external references is deleted, the unresolved references remain in the CESD.

When some but not all control sections of a separately assembled module are to be replaced, the linkage editor causes A-type address constants that refer to a deleted symbol to be incorrectly resolved unless the entry name is at the same displacement from the origin in both the old and the new control sections.

If no INCLUDE statement follows the REPLACE statement, one module might be left out during automatic library call. Message IEW0132 is issued.