# V8020\. Recurring check\. This condition was already verified on a previous line\.

The analyzer has detected a potential error: the same condition is being checked twice\.

Examples:

```cpp
// Example N1

if A == B {
  if A == B {
    ....
  }
}

// Example N2

if A == B {
  ....
} else {
  if A == B {
    ....
  }
}
```

In the first case, the second `A == B` check is always true\. In the second case, it is always false\. Such code may result from refactoring or from using the wrong variable by mistake\.

The fixed examples:

```cpp
// Example N1

if A == B {
  if A == C {
    ....
  }
}

// Example N2

if A == B {
  ....
} else {
  if A == C {
    ....
  }
}
```