Workflow Buttons such as Update and Resubmit are not visible in Mobile.
SAP SuccessFactors Employee Central - Mobile App
Reproducing the Issue
1. Open SuccessFactors Mobile Application.
2. Go to Pending Workflow Requests.
3. Open a Sent Back Workflow Only Withdraw Button is available.
The Update button is not supported in all Workflow Types in Mobile because the Mobile UI does not support the Update Page.
As for Send Back workflows, if the initiator cannot do update, there is no point to have "Resubmit" button. And when a User resubmits, it will have a Workflow Confirmation Pop-up which includes the Workflow Participants list and Comment Area shows up. However, the Mobile UI cannot support this popup. So, we hide Update and Resubmit bottom in Mobile and OData.
If you require this functionality in the system, you may raise an Enhancement Request via https://influence.sap.com/successfactors.
You may refer to the following KBA: https://launchpad.support.sap.com/#/notes/2090228
ECT-103246, workflow, button, mobile, withdraw , KBA , LOD-SF-EC-MOB , Employee Central Mobile , Problem