VBA101 — ReDim target undefined

Severity: 🔴 error Category: declaration Phase: 1.4

Description

ReDim is applied to a name that has not been declared as a dynamic array.

Failing example

ReDim notDeclared(1 To 10)

Compliant example

Dim arr() As Long
ReDim arr(1 To 10)

How to fix

Declare the array with Dim arr() As Type first.

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Source: src/rules.py — entry VBA101.