There are various symptoms to this problem. It can occur when modifying, displaying or compiling a map online using task code MAPC.
It can cause the task to loop or it may cause the whole CV to loop. The loop can be in module OLMPDACC or OLMPDAST. The following message may be issued:
DC027007 Vnn Tnnnn TASK:ADS2 PROG:OLMPDACC ABENDED WITH CODE D004
IDMS - All Supported Releases
These symptoms are usually caused by a corrupt map definition in the dictionary DDLDML area.
To resolve the problem the map definition in the dictionary has to be deleted and recreated. Use the following procedure to recreate the map: