Challenges - Data Migration

Hi, could someone tell me the challenges that are commonly encountered during data migration?

Hi Ananth,
We can foresee numerous challenges in Data Migration. Few of the most important ones as below:
1) Ensure that we download/extract precise data from Source system( eg.ECC). We must configure fool proof extract mechanism to download it to right format.
2) Precise Import maps -
a) Lookup tables - Look up tables have to be refreshed with live data from source systems with valid remote keys. This is required for making auto value mapping happen during import.
b) Main table import map - Accurate import map for main table ;identify the right matching field 9 primary key)
c) Maps for Qualified /Hierarchy tables  - Import maps Involves compound fields and field partioning, Right display fields to be decided and configured accordingy.
Ensuring table joins, splitting, partitioning are done accurately is very important.
3) Volume of imports - Bulk imports hinder import performance. Perform batch imports of smaller chunk size to speed up the process.
4) Data validation - Formulating a process/template to validate data in MDM with source system data. This is a complex process when validation is required for every field in data model.
Regards,
Vinay M.S

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