PowerCenter maintains an association between the source object IDs and the target object IDs in the target repository. If you migrate objects of the same type and with the same name from multiple source repositories into a single target repository, the association in the target repository leads to issues, such as inconsistencies and duplications. When you perform migration from multiple source repositories to a single target repository, ensure that objects of the same type have unique names across the source repositories.

You can always perform migration from a single source repository to a target repository. When you do not perform bulk migration or migration from numerous folders, a workaround is to use object import or export to deploy objects across repositories.