In SAS Risk Dimensions, circular inheritance occurs if the same
environment is loaded more than once.  For example, if business unit
(BU) environments are created by inheriting a root environment, and then
an enterprise-wide environment is created by inheriting from the BU
environments, the environments are loaded as follows:

   root <- BU1 <- root <- BU2 <- Enterprise-wide

Because of the repeated loading of the root environment, there is a
circular inheritance error message:

   ERROR: There is circular environment inheritance.

If an enterprise-wide environment is not needed, environments can be
saved by using ENV SAVEAS=<env_name> in the RISK procedure.  Many
objects, but not all, can be imported from one environment to another by
using the IMPORT statement in PROC RISK.

If an enterprise-wide environment is needed, then the only workaround is
to forego the creation of the root environment -- start with the
creation of the business unit environments.

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