In this weblog I would be covering how to carry out Initialisation of delta programmatically. As per our normal process we need to manually delete the previous init using Scheduler --> Initializations Options for source system. This step needs to be done manually whenever we do an init run. Here’s a way out of this. In case we need to carry out the same programmatically the steps are as follows 1) Create an infopackage with update type as ‘Init’. We can even create infopackages manually using BAPIs as depicted in this article.How to Create and Delete InfoPackages with BAPI However, my experience made me understand that we cannot create Init infopackages using this, atleast in BW 3.5. So adopted this step of creating one manually first. Instead of using 'BAPI_IPAK_CREATE' as in the article we can use 'BAPI_IPAK_CHANGE' giving reference of technical id of our manually created infopackage. Using the above article we can take care of the data selections, scheduling (whether periodic, immediate etc) for the infopackage according to the requirements at run time. One can even have a dynamic name for the infopackage ( eg. ‘ Init for a April 2006’--- Here April 2006 is set dynamically’) . 2) Execute function 'RSS1_QUEUE_DELETED_IN_OLTP' by giving concerned data source and logical source system name as input. This is the step for deleting previous initialization (this replaces Scheduler --> Initializations Options for source system step from infopackage ) 
3) Now that the Init infopackage is all set, all we need to do is start the infopackage using 'BAPI_IPAK_START' To summarize, the steps are: 1) Create an infopackage with update type 'Initialise' and change it using BAPI_IPAK_CHANGE , if needed. 2) Call function 'RSS1_QUEUE_DELETED_IN_OLTP'3) Execute the Init infopackage using 'BAPI_IPAK_START' We can club it in an ABAP program and include the same in the process chain, thus automating the manual process. I am not very sure the usage of the same in real time, as we rarely need to automate the Init loads. However, just thought of sharing this with the BW community.
3) Now that the Init infopackage is all set, all we need to do is start the infopackage using 'BAPI_IPAK_START' To summarize, the steps are: 1) Create an infopackage with update type 'Initialise' and change it using BAPI_IPAK_CHANGE , if needed. 2) Call function 'RSS1_QUEUE_DELETED_IN_OLTP'3) Execute the Init infopackage using 'BAPI_IPAK_START' We can club it in an ABAP program and include the same in the process chain, thus automating the manual process. I am not very sure the usage of the same in real time, as we rarely need to automate the Init loads. However, just thought of sharing this with the BW community.
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