@IntuitGabi   We are experiencing the same issue.  For us, it occurs in returns with Schedule F that use Form 4562A and Form 4562B.  The Iowa efile information does not list this worksheet as one that is not ready for efile.  Has ProSeries let this error message slip through the cracks?  Can you elevate this to your development team for an immediate fix?  We have quite a few of these returns with Schedule F whose due date is next Tuesday March 1.  Would appreciate a quick response as we do not wish to convert to paper.