Yes, all transactions that are part of the cash in and out are part of your closing books.
Visit this article to know more about closing your books in QuickBooks Desktop: https://community.intuit.com/articles/1773838.
Resolution for 'books issue: 'Are accrual and reversal entries a part of closing the books?' available: Yes.
The books issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the books issue yourself by looking for a resolution described in the article. If it is a complex books issue or you are unable to solve the issue, you may contact us by clicking here or by using other books support options.
For more information about resolving issues related to books in Quickbooks/QBO or to get support for the issue 'Are accrual and reversal entries a part of closing the books?', click the link below: