Making IMS.SDFSRESL available

After updating the DD concatenation for IMS.SDFSRESL, you need to make it available.

To make IMS.SDFSRESL available, use one of the following methods:

Add the IMS.SDFSRESL data set to the ISPF ISPLLIB
Add the IMS.SDFSRESL data set to STEPLIB in the TSO logon procedure
Use TSOLIB from TSO READY to establish IMS.SDFSRESL in the search list:
```
TSOLIB ACTIVATE DATASET('IMS.SDFSRESL') 
```

If you do not want to add the entire IMS.SDFSRESL data set to the concatenation, you can concatenate a data set that contains both DFSABND0 and DFSOFMD0 load modules from the highest IMS version level with the alias modules from the IMS.SDFSRESL for lower-level IMS versions that you want to format.

The following example shows how to concatenate DFSABND0 and DFSOFMD0 from IMS Version 12 and provide format support for IMS Version 11:

DFSABND0 DFSAB121 DFSAB111 
DFSOFMD0
DFSOF121
DFSOF111

For more information, see z/OS® TSO/E Command Reference.