How to upload the data from legacy system database to SAP data base

10-11  Source: Network gathering  Views:0 

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Hi.
We are doing analysis of Legacy system and which needs to be converted to SAP system i.e. SAP implementation.
I just want to know , how we migrate the existing whole data( from legacy system) into SAP system.
and which method is the best method to use data migration from legacy to SAP system if data legacy data amount is huge.
Please suggest me.
Thanks.
Hi
We can either use the BDC or BAPI or LSMW  or Direct Input techiniques for the data transfers.
The combination of both Session and Call transaction can be used to achieve this that includes the error handling also. This invloves the screen interaction.
These days, BAPIs are used to overvome some upgrade problems. For easy upgradation, we cna go for BAPIs. Here ther is no screen intercation.
LSMW mainly used for master data transfers using some standrad programs.
As per your client or company desicions  we can choose any of them.
Please refer to these links for more understanding -
BDC Vs LSMW -
BDC VS LSMW
BDC Vs BAPI -
BDC VS LSMW
Thanks & Regards,
Chandralekha.
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