Solution : https://service.sap.com/sap/support/notes/398491 (SAP Service marketplace login required)
Key words :
transaction sm31 -> table t100 -> maintain -> message class m8 ->change -> select, arbgb msgnr msgta msgtd xigno m8 694 wi, create system message m8694 admit, multiple account assignment solution, development class 'mr', system table t100s, create message m8694, ------------------------------------------------------------------------create system message 1, support package inrelease 4, edited -> individual maintenance 3
Related Notes :
| 449277 | M8008: SYSTEM ERROR: error in routine MRM_DRSEG_CR_CREATE |