This is not possible since different subschemas are needed for these areas. IDMSCATL is the subschema that must be used to Unload-Reload the DDLCATLOD area. IDMSCATZ is the subschema that must be used to Unload-Reload the DDLCAT and DDLCATX areas. These 2 area may be processed together. Should Unload-Reload the DDLCATLOD area first, since subschema IDMSCATL contains only the DDLCATLOD area. Subschema IDMSCATZ, used for unloading the DDLCAT and DDLCATX areas, also contains the DDLCATLOD area. This will cause the DDLCATLOD area to be readied and may cause an 0970 on DDLCATLOD area, if using new DMCL and pointing to new DDLCATLOD file. The 0970 is an Open failure and will prevent the Reload from succeeding.