Legacy data generally required

hi friends,
1) I want to know that what all different datas that are generally required from the legacy system to be migrated to SAP ISU.
for Eg. business partner , contract account , contract etc....
I mean to say basically cut over data during implementation
2) which fields are generally kept mandatory.
3) how it uploaded in SAP ISU. (for e.g. BDC , LSMW, EMIGALL etc)
4) is the data for business process like move in , open billing docs etc is also uploaded & how?
Your inputs are valuable ...
Regards,
Chetan

Hi Chetan,
Your question is very general and it is very difficult to give aou a good answer. Your answer can be answered only based on a specific scope of the project e.g. the implementation of a distributor differs a lot compared to an implementation of a retailer, or energy company has other needs than a water company.
At least one certain answer I can give you: the tool to load data into IS-U/CCS is the Industry Solution Migration Workbench (transaction EMIGALL). Plainly, there are no other viable alternatives to this tool. You might want to checkout the Guideline IS Migration Workbench (transaction EMIGALL) first in order to access a document that will give you a good understandig of the tool. In the same document you will find a lot information what kind of data can be migrated into IS-U and other industry solutions and which objects will be required in dependancy of the migration strategy. There you will find also the information, that certain fields are marked as mandatory and need to be used to migrate sucessfully a particular object. I'd like to suggest again to read this document first and then to get back with specific questions.
Please take in mind that the forum might not be in the position to provide full sized documents to give you a full-blown response to your request. Almost all such documents have to be regarded as the intellectual property of the companies who paid for these documents. On the other hand, if cou come up with a more specific question, the forum would be happy to give you a good answer.
Kind regards,
Fritz

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550176 FAQ note legacy data transfer asset master records
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please send detail steps for uploading legacy data
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I would request you, if anybody let me knwo the process of legacy data migration into sap. What are steps I have to follow while doing legacy data migration. My questions are:
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