## Documentation Index

Access the complete documentation index at:
https://www.zoho.com/sa/books/kb/llms.txt

Use this file to discover all available documentation pages before proceeding.

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# Facing an error “Mandatory Field Unit Price is Missing” while importing invoices in the migration wizard. How do I proceed?

Invoices can be downloaded in three different formats from Wave using Google sheets:

*   Invoice data
*   Invoice data and line items
*   Invoice data and payments

However, as item details are mandatory in Zoho Books, you’ll have to select the **Invoice data and line items** format while exporting from Wave. If the other formats are selected, the error will be displayed.

![Sample](/books/kb/images/wave/invoice-data.png)