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Introducing SUMIF in Excel, ExcelMaster.ai features in formula generation, a case study how to use ExcelMaster.ai to improve productivity.

The VBA Subscript Out of Range (Runtime Error 9) occurs when trying to access non-existent objects or array elements in Excel VBA code. This common error typically happens with missing worksheets, undefined array boundaries, or invalid range references. The error can be prevented by using Option Explicit, proper error handling, and verifying object existence before access.