Symptom
You are using the SAP S/4HANA migration cockpit (Migrate Your Data – Migration Cockpit app) to migrate data to SAP S/4HANA or SAP S/4HANA Cloud. With migration approach Migrate Data Using Staging Tables, you copied a large number of migration objects or many large objects to a project. When you start an action (such as the preparation step, the simulation, or the migration), a system error occurs.
Related error messages:
For SAP S/4HANA Cloud and SAP S/4HANA systems, in the Migrate your Data –Migration Cockpit Fiori app, on the Monitoring screen → Show messages:
- “System error during preparation of the data transfer” /LTB/MC, Message no. 68
For SAP S/4HANA systems (On–Premise), transaction ST22:
- ABAP Programming error: GEN_TOO_MANY_CBS, Short Text: Too many "DATA" control blocks generated
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Environment
- SAP S/4HANA
- "Migrate Your Data – Migration Cockpit" app
- Migrate Data Using Staging Tables
- "Migrate Your Data – Migration Cockpit" app
- SAP S/4HANA Cloud
- "Migrate Your Data – Migration Cockpit" app
- Migrate Data Using Staging Tables
- "Migrate Your Data – Migration Cockpit" app
Product
Keywords
data migration, System error during preparation of the data transfer, message error 68, GEN_TOO_MANY_CBS, Too many "DATA" control blocks generated, Fiori, s4hana, system error, migrate your data, migration cockpit, SAP S/4HANA migration cockpit, staging tables approach, migrate data using staging tables , KBA , CA-LT-MC , S/4HANA Migration Cockpit , Problem
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