Merge pull request #2309 from syncfusion-content/995641-RefErrorFAQ

Documentation(995641): FAQ on Why formulas referencing the deleted column show #REF! errors

Author: Mohan2401

Document-Processing-toc.html

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 										<a href="/document-processing/excel/excel-library/net/faqs/how-to-get-external-connection-name-and-change-table-name">How to get the external connection name from a QueryTable in an IListObject and how to change the table name using XlsIO?</a>
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+										<a href="/document-processing/excel/excel-library/net/faqs/why-formulas-referencing-the-deleted-column-show-ref-errors">Why do formulas referencing a deleted column show #REF! errors?</a>
+									</li>
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Document-Processing/Excel/Excel-Library/NET/faqs/why-formulas-referencing-the-deleted-column-show-ref-errors.md

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+---
+title: Formulas reference errors | Syncfusion
+description: This page explains why the formulas that referenced cells in the deleted column will display REF! errors.
+platform: document-processing
+control: XlsIO
+documentation: UG
+---
+
+# Why do formulas referencing a deleted column show #REF! errors?
+When a column is deleted either directly in Excel or programmatically using Syncfusion XlsIO the entire column is removed and the columns to the right shift left. If any formula referenced cells within the deleted column, Excel can no longer resolve those references. As a result, the affected formulas display #REF! errors to indicate that the referenced cells no longer exist. Syncfusion XlsIO follows the same behavior as Microsoft Excel in this scenario.