The Mark All button is unavailable.The Mark All button is unavailable.
The Mark All button is available only if you selected text before opening the Mark Index Entry dialog box รน not if you typed your own text in the dialog box. To see the Mark Index Entry dialog box, point to Reference on the Insert menu, click Index and Tables, and then click Mark Entry.
The page numbers in the index don't match those in my document.
If you add, delete, move, or edit index entries or other text in a document, you should manually update the index. For example, if you edit an index entry and move it to a different page, you need to make sure that the index reflects the revised entry and page number. Try the following solutions:
Update the index or table field An index is inserted in your document as a field. To update the index, click to the left of the field and press F9.
Hide fields or hidden text Index entries are inserted in your document as fields in hidden text format. To hide these fields or other hidden text in your document, click Show/Hide 
on the Standard toolbar. To update the index, click to the left of the field and press F9.
Remove the hidden text format Your document may contain hidden section breaks or page breaks. First, display the hidden text, and then find and remove the hidden text format. After you remove the hidden text format, update the index or table field by clicking to the left of the index or table, and then press F9.
Instead of the index, I see {INDEX} in my document .
An index is inserted in your document as a field. If you see something like {INDEX} instead of the index, the field is being displayed instead of field results. To view the results for all the fields in the document, select the entire document, right-click the field code, and then click Toggle Field Codes on the shortcut menu.