There is a requirement to pre-fill the username field on SAP IAS login page, when it redirects from the Application (for example from SFSF) to SAP IAS login page.
e.g.: When logging into the SuccessFactors system it is possible to fill the company ID by using URL parameter for it.
SAP Cloud Platform Identity Authentication Service
IAS, pre-fill, username, field, SFSF, supported , KBA , BC-IAM-IDS , Identity Authentication Service , How To
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