User Not able to add Insert, desert and update statements in Procedure

Hi All,

One of the Developer in Our HANA system is not able to create procedures with Insert , delete and update statements he can only create Read only procedures in SQL editor.

P.S, he is not using calculation view and he is able to execute the single Insert, Delete and Update queries (w/o using them in procedures)

Whot could be the possible cause, what role should be assigned to him.