An account with a reference has no conditions of its own

What causes this issue?

Account with reference means that the conditions contained in the
referenced account will be used when the account is costed.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

From the initial screen in account maintenance, you can determine the
reference account for an account via <zh>attributes</>.
If you are in sub-area 'attributes' for an account with reference, you
can go to the initial screen for account maintenance via <zh>reference
account</>. The parameters for reference accounts have default values.

Error message extract from SAP system. Copyright SAP SE.