ID duplicate in RAM db

We got the follow exception in the RAM:
00000050 SystemOut O CRRAM0001E 554520453 ERROR ws com.ibm.ram.repository.web.ws.core.RAM1Impl - One or more values in the INSERT statement, UPDATE statement, or foreign key update caused by a DELETE statement are not valid because the primary key, unique constraint or unique index identified by "3" constrains table "RAMSCHEMA.REPOSITORYMETRIC" from having duplicate values for the index key.
com.ibm.ram.repository.core.IRepositoryAccess$RepositoryException: One or more values in the INSERT statement, UPDATE statement, or foreign key update caused by a DELETE statement are not valid because the primary key, unique constraint or unique index identified by "3" constrains table "RAMSCHEMA.REPOSITORYMETRIC" from having duplicate values for the index key.
at com.ibm.ram.repository.core.sdo.BaseRAMSchemaAccess.addMetric(BaseRAMSchemaAccess.java:10640)
at com.ibm.ram.repository.core.sdo.BaseRAMSchemaAccess.addMetric(BaseRAMSchemaAcce


We checked this table schema and run this SQL on it:
SELECT INDNAME, INDSCHEMA
FROM SYSCAT.INDEXES
WHERE IID = 3
AND TABSCHEMA = 'RAMSCHEMA'
AND TABNAME = 'REPOSITORYMETRIC'

It shows INDNAME: C4752929, that means the PK "ID' is not duplicate.
This "ID" seems controlled by RAM application, it is not using auto create base on database control.
Should we stop all RAM application and restart Db to resolve this problem?