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You can use a free addin by Microsoft and also step by step tutorial is there too <br />
<a href="https://support.office.com/en-us/article/Create-an-XML-data-file-and-XML-schema-file-from-worksheet-data-e35400d4-0e10-4669-9a50-59a8c57d677e" rel="ugc nofollow">https://support.office.com/en-us/article/Create-an-XML-data-file-and-XML-schema-file-from-worksheet-data-e35400d4-0e10-4669-9a50-59a8c57d677e</a>
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You can use a free addin by Microsoft and also step by step tutorial is there too
https://support.office.com/en-us/article/Create-an-XML-data-file-and-XML-schema-file-from-worksheet-data-e35400d4-0e10-4669-9a50-59a8c57d677e [https://support.office.com/en-us/article/Create-an-XML-data-file-and-XML-schema-file-from-worksheet-data-e35400d4-0e10-4669-9a50-59a8c57d677e]

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That addin does not work with Office 2010. I have already looked at that. Thank you.
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That addin does not work with Office 2010. I have already looked at that. Thank you.

XmlTools2010.zip

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I have an 2010 excel spreadsheet with 250 columns off data that i need to convert to XML file but keep getting an error &quot;Cannot save or export XML data. The XML maps in this workbook are not exportable&quot;. Cannot find out why I keep getting this error. Can someone help me. I will upload the excel file and the schema XML file.<br />
Please can someone help me with this problem. Thank you<br />
<a href="https://filedb.experts-exchange.com/incoming/2016/04_w16/1091690/EmployeeHours2.xlsx" target="_blank" class="file-inline" title="EmployeeHours2.xlsx (13 KB)"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path d="M67.508 468.467c-58.005-58.013-58.016-151.92 0-209.943l225.011-225.04c44.643-44.645 117.279-44.645 161.92 0 44.743 44.749 44.753 117.186 0 161.944l-189.465 189.49c-31.41 31.413-82.518 31.412-113.926.001-31.479-31.482-31.49-82.453 0-113.944L311.51 110.491c4.687-4.687 12.286-4.687 16.972 0l16.967 16.971c4.685 4.686 4.685 12.283 0 16.969L184.983 304.917c-12.724 12.724-12.73 33.328 0 46.058 12.696 12.697 33.356 12.699 46.054-.001l189.465-189.489c25.987-25.989 25.994-68.06.001-94.056-25.931-25.934-68.119-25.932-94.049 0l-225.01 225.039c-39.249 39.252-39.258 102.795-.001 142.057 39.285 39.29 102.885 39.287 142.162-.028A739446.174 739446.174 0 0 1 439.497 238.49c4.686-4.687 12.282-4.684 16.969.004l16.967 16.971c4.685 4.686 4.689 12.279.004 16.965a755654.128 755654.128 0 0 0-195.881 195.996c-58.034 58.092-152.004 58.093-210.048.041z"/></svg>EmployeeHours2.xlsx</a><br />
<a href="https://filedb.experts-exchange.com/incoming/2016/04_w16/1091691/nhpbj_1_00_1.xml" target="_blank" class="file-inline" title="nhpbj_1_00_1.xml (3 KB)"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path d="M67.508 468.467c-58.005-58.013-58.016-151.92 0-209.943l225.011-225.04c44.643-44.645 117.279-44.645 161.92 0 44.743 44.749 44.753 117.186 0 161.944l-189.465 189.49c-31.41 31.413-82.518 31.412-113.926.001-31.479-31.482-31.49-82.453 0-113.944L311.51 110.491c4.687-4.687 12.286-4.687 16.972 0l16.967 16.971c4.685 4.686 4.685 12.283 0 16.969L184.983 304.917c-12.724 12.724-12.73 33.328 0 46.058 12.696 12.697 33.356 12.699 46.054-.001l189.465-189.489c25.987-25.989 25.994-68.06.001-94.056-25.931-25.934-68.119-25.932-94.049 0l-225.01 225.039c-39.249 39.252-39.258 102.795-.001 142.057 39.285 39.29 102.885 39.287 142.162-.028A739446.174 739446.174 0 0 1 439.497 238.49c4.686-4.687 12.282-4.684 16.969.004l16.967 16.971c4.685 4.686 4.689 12.279.004 16.965a755654.128 755654.128 0 0 0-195.881 195.996c-58.034 58.092-152.004 58.093-210.048.041z"/></svg>nhpbj_1_00_1.xml</a>
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EmployeeHours2.xlsx

nhpbj_1_00_1.xml

I have an 2010 excel spreadsheet with 250 columns off data that i need to convert to XML file but keep getting an error "Cannot save or export XML data. The XML maps in this workbook are not exportable". Cannot find out why I keep getting this error. Can someone help me. I will upload the excel file and the schema XML file.
Please can someone help me with this problem. Thank you

I have asked this before but can someone help with converting excel to XML

Extensible Markup Language (XML) refers to the encoding of documents such that they can be read by both machines and humans. XML documents use tags to show the beginning and end of a set of data. XML is used extensively on websites to show volumes of data, and is the default for a number of office productivity suites. This topic includes discussions of XML-related technologies, such as XQuery (the XML Query language), XPath (the XML Path language), XSLT (eXtensible Stylesheet Language Transformations), XLink (the XML Linking language) and XPointer (the XML Pointer language).

Microsoft Excel topics include formulas, formatting, VBA macros and user-defined functions, and everything else related to the spreadsheet user interface, including error messages.