I received a call from an experienced GP consultant who said his customer was having a serious problem with their posted batches. When the client posted their batches on April 21, one of the batches had a posting date of April 20! How is this possible!
This is probably one of the most common questions related to GP, and the similar date names also confused me when I first started working with GP. I was a bit surprised when the GP consultant asked me to look into this "issue", as all GP consultants should know this distinction cold.
If you aren't 100% confident and 100% clear on the difference between a Document Date, Posting Date, and Posted Date in Dynamics GP, please, please, please read this brief post by Victoria Yudin.
If you open GP on Thursday, April 21, 2016 and post a batch, that is your POSTED date. The batch or transactions (depending on your configuration), can have a different POSTING date. And to make things fun, the transactions in the batch can have completely different DOCUMENT dates.
Clear as mud? Go read Victoria's article one more time.