Dependent validation cannot be carried out for index no. &1, val. &2

What causes this issue?

The error was caused by one of the following reasons:
A previous dependent validation was classified as incorrect and
thus locks all follow-up validations involving one of the registers.
One or more devices in a dependent validation were deferred or
automatically blocked during an independent validation.
None of the dependent validations for these devices can be performed.
The independent validations defined in table E219 must always either be
completed successfully or be terminated via agent release.

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

System Response

How to fix this error?

Choose <LS>Correct</> to branch to the correction screen.
Correct the implausible reading or choose <LS>Enter</> to automatically
defer all relevant meter readings.

Error message extract from SAP system. Copyright SAP SE.