Restrictions and considerations for the MFS Reversal utility

Restrictions

The copy function of the MFS Reversal utility does not support alias members. When alias members exist in the FORMAT DD, the copy function skips these members and continues processing. When alias members exist in the COPYFMT DD, the copy function ends with an error message. Before you run the copy function, ensure that the partitioned data set that is specified by the COPYFMT DD does not contain alias members.

Considerations

The MFS Reversal utility can execute while IMS™ Online is active. However, during the execution of the utility, the status of the format library must not be changed through the use of the IMS Online MODIFY command. Also, the JCL of the IMS Control Region and that of the utility must allow sharing the IMS MFS format library.

The MFS Reversal utility makes certain assumptions when generating source. You might need to modify the generated source before you use the source as input to the MFS Language utility. See Important notes about the generated source for information about the generated source.