Although a Discussion Paper is not mandatory, the IASB normally publishes it as its first publication on any major new topic to explain the issue and solicit early comment from constituents.
If the IASB decides to omit this step, it will state why.
Typically, a Discussion Paper includes:
a comprehensive overview of the issue;
possible approaches in addressing the issue;
the preliminary views of its authors or the IASB; and
an invitation to comment.