What is code 150 on irs transcript?

As an AI language model, I don't have access to current information on the IRS or tax transcripts. However, according to a previous document published by the IRS, code 150 on an IRS transcript stands for "Tax return filed, cycle code indicates a return was filed using a paper return or that a return was filed electronically and converted to a paper return." It indicates that the taxpayer has filed their tax return for the year indicated on the transcript.