2683017 - CM Services Synchronize Service - 500 Internal Server Error

Navigate to CM Services > Related Links menu > Synchronize Service > Click 'Next' on the Development Configuration and get error:

500 Internal Server Error is returned for HTTP request

[http://<host>:<port>/webdynpro/resources/sap.com/tc~di~cts~config~webui/Synchronize]:

component [forwardServlet],

web module [webdynpro/resources/sap.com/tc~di~cts~config~webui],

application [sap.com/tc~di~cts~config~webui],

DC name [sap.com/tc~di~cts~config~webui],

CSN component[BC-CTS-CMS],

problem categorization [],

internal categorization [-44371835].

[EXCEPTION]

java.lang.NullPointerException: while trying to invoke the method

java.lang.Object.hashCode() of a null object loaded from local

variable 'key'

*note that if the error is the following:

[EXCEPTION]
java.lang.StringIndexOutOfBoundsException: String index out of range

go to the following note instead 1756706 - StringIndexOutOfBoundsException in CM Services

SAP NetWeaver 7.3
SAP enhancement package 1 for SAP NetWeaver 7.3
SAP NetWeaver 7.4
SAP NetWeaver 7.5

NWDI, CTS+, MII, CM Services, blank page, save , KBA , BC-CTS-CMS , Change Management Service , BC-CTS-DI , Development Infrastructure (NetWeaver Java) , Problem