An EXEC CICS REWRITE command to a VSAM file has failed in a CICS® Service Flow Runtime system module or in one of your generated FEPI navigator or Link3270 navigator programs.
This condition can occur on the Target Interaction file DFHMATIF, or the SLU Connection file DFHMACOF if reported by a generated FEPI navigator. If reported by the system module DFHMALFS, this condition occurred on the Link3270 business state file DFHMAL2F.
Dump the error log DFHMAERF to determine the problem. Check the file attributes and that the file is defined correctly and enabled to CICS. A duplicate key (DUPKEY) condition on the alternate index for the SLU Connection file will not cause this condition: CICS response code = 15.
If the error occurred on the CICS SFR Link3270 business state file DFHMAL2F, you can use the CICS transaction ID, field Tranid:, found in the error log dump to determine the program name of the generated Link3270 navigator that called the system module reporting the problem if necessary.