Fuse definitions of transformations  expand  and nest (replace section 3.12, delete section 3.18). Allow paths without a navigation property at the end Remove sentence about multi-level expansion Move example 30 (nested expand ) to section 7.2 Replace example 54 with two examples, one with nest  (not nestproperty ), another with join (transformation join is discussed in ODATA-1409 ) Revert ODATA-1206 , only single-valued property paths are allowed in groupby Details are described in  https://www.oasis-open.org/apps/org/workgroup/odata/download.php/68283/ODATA-1404.docx