The enzyme not involved in substrate level phosphorylation is:
(Refer: Harper’s Illustrated Biochemistry, 27th edition, pg no: 172 – 185)
Oxidative phosphorylation

The energy released as a result of biological oxidation is trapped in the form of higher energy phosphate bonds in ATP by phosphorylation of ADP.
Succinyl thiokinase
Phosphofructokinase
Pyruvate kinase
Phosphoglycerate kinase