2879030 - Getting exception condiction "SUBOBJECT_NOT_FOUND" on SAPLSLG0

Getting ST22 dump:

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  Category ABAP Programming Error
  Runtime Errors RAISE_EXCEPTION
  ABAP Program SAPLSLG0
  Application Component BC-SRV-BAL
  Date and Time dd.mm.yyyy hh:mm:ss

  Short Text
     Exception condition "SUBOBJECT_NOT_FOUND" triggered
 
  Error analysis                                                                                   
       A RAISE statement in program "SAPLSLG0" has raised exception condition                       
      "SUBOBJECT_NOT_FOUND".                                                                      
      Since the exception was not caught by a program higher up in the call                        
      hierarchy, processing was terminated.                                                        

  Information on where terminated 
     The termination occurred in ABAP program "SAPLSLG0", in "SET_CURRENT". The
     main program was "SAPMMSDL".

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Following information can be seen on the dump:
  SY-TITLE      Mass Maintenance: Purchase Contract                                                     
  SY-MSGTY    E                                                                                       
  SY-MSGID    BL                                                                                      
  SY-MSGNO  011                                                                                     
  SY-MSGV1   COND                                                                                    
  SY-MSGV2   MAINTENANCE 

SAP NetWeaver system

MEAMSSCONTRACT, SUBOBJECT_NOT_FOUND, COND, MAINTENANCE, SLG0
RAISE_EXCEPTION, SAPLSLG0, LSLG0F02, SET_CURRENT, SAPLSLG0, BL 011 , KBA , BC-SRV-BAL , Basis Application Log , MM-PUR-OA-BAPI , BAPIs - Outline Agreements , Problem