SPNEGO: Error during Secure Storage access (C-function: RsecDReadItem, rc:15-)

You are making updates to the SPNEGO configuration as part of the SNC/SSO setup, but an error occurs during the attempt to save the changes in SPNEGO.

Solution

Open the transaction transaction code SECSTORE and remove the invalid entries for /SPNEGO/KEYTAB/*

Reference

SAP Note 2996728 – Error saving SPNEGO configuration – “Error during Secure Storage access (C-function RSecDReadItem, rc 15-)