Impact of the Datasource structure got changed?

Hi all,
I am working on CRM as sourcesystem.I have created datasource with Function module.Data has been loading to the cube since one month.The problem is in the structure Tittle1(40) and Tittle(40) length has taken.But it should have to take Tittle1(60).So I need to change the Structure of the function module.
I would like to know what are the impacts will happen if changed the existing structure at CRM system.What are the steps to be taken to make these changes?What would be the impacts at BW side.
your help will be greatly appreciated
Regards,
Praveena

Hi Praveena,
               Firstly there wont be any impact on your BW side assuming that the infoobject you were mapping in B/W can be mapped readily(assuming that you need not change the infooject properties) to the field (the field for which length is changed in the structure).
               On the source system side, once you make your structure changes and activate, you need to make adjustments in function module and in cmod code(if any cmod code exists).
              Apart from the above, there wont be any more impact on other objects. Anyway you want to change the length of a field in your structure, so there wont be much of changes even in FM.
            But you need to replicate your Datasource in BW once your FM is activated after your structure changes
Regards
Sunil

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