1989294 - CHECK-APPLICATIONS-SNAPSHOT failed with NullPointerException

Deployment using SUM is failing. In the TroubleTicket_**.txt file generated by SUM you can find the logs similar with the following log:
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An error has occurred during the execution of the Check Java applications snapshot step with action execute. Service com.sap.sdt.jspm.service.ApplicationSnapshotService failed with the following message:
java.lang.NullPointerException:
You can find more information in the files /usr/sap/trans/SP/SUM/sdt/log/SUM/CHECK-APPLICATIONS-SNAPSHOT_**.LOG and ProcessOverview.html.
Use the information provided to trouble-shoot the problem. There might be an OSS note providing a solution to this problem. Search for OSS notes with the following search terms:
SUM,execute,final-system-start,check-applications-snapshot,com.sap.sdt.jspm.service.ApplicationSnapshotService,class java.lang.NullPointerException
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In sdmlog<date>.log, you can see the error below:
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Error: SDMAuthenticatorImpl.getPassword(): Password in SecStore is null or is empty. Will try to load it from SDM Repository.
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• SAP NetWeaver 7.0
• SAP enhancement package 1 for SAP NetWeaver 7.0
• SAP enhancement package 2 for SAP NetWeaver 7.0
• SAP enhancement package 3 for SAP NetWeaver 7.0

sdm, NullPointerException, NPE, sdm/password, password, CHECK-APPLICATIONS-SNAPSHOT, "Password in SecStore is null", SDMAuthenticatorImpl, getPassword , KBA , BC-CTS-SDM , Software Delivery Manager for Java , BC-UPG-TLS-TLJ , Upgrade tools for Java , How To