WEB API

How do I can modify the author name via web api? we do a check out, modify de variable but can´t do a check in againg, we do undo-checkout, our support team told us to do it but it erase the change a restablish the archive. If we attempt to do a chek in after modifty the variable we have the following error:

[2026-05-27 15:48:39.215] [ERROR] [22100306011] [PdmClientDev] - ##@@-- [PDM:json_put] checkin_addfiles(changeset_id=3, doc_id=1076) ERROR: Pdm::HttpError - checkin_addfiles(changeset_id=3, doc_id=1076) -> HTTP 415

Could anyone help us?