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Former Member
Here I want to share my project experience on SAP GST Project implementation. GST is new tax system which has been effective in India, starting from 1st July 2017. Most of time ABAP developer needs to implement GST OSS notes. This blog will help technical members to understand challenges and best practices.

  • Number of Notes, OSS notes URL details.These are important URLs, there are around 80 OSS notes for ECC environment.


https://launchpad.support.sap.com/#/legalchangenotification/detail/GSCBIN-348


https://launchpad.support.sap.com/#/notes/2421394/E




  • Transport request approach: Create one single workbench and customizing transport request for all OSS notes instead of creating transport request per OSS note. This will help you while moving to Quality and Production environment.

  • Manual notes:There are number of manual notes which need to be implemented. You need to have lot of patience with such OSS notes. Some of manual notes are quite lengthy, especially those OSS notes which were released by SAP support team in the beginning.

  • Effort Estimation: You can implement around 10 OSS notes in 8 hour of effort. So, if you need to implement around 80 OSS notes, this would take around 8 Man Days of effort. This effort is also included trouble shooting which you may need to do when there is error while doing implementation of lengthy OSS notes.

  • Access key while modify standard object: If you have authorization to generate access key while modify standard object, this is best situation. Otherwise, you always need to depends upon Basis Team. So Be ready to collaborate with Basis Team to get access keys.

  • Resolving Errors when implementing OSS notes, rollback notes: Lot of times you may get error while implementing OSS notes, so be ready to roll back OSS notes. Find the root cause of this error and try to re implement same notes.

  • Jam Page details: There are JAM sites where you can get lot of material related to GST. You can search these JAM sites of error messages which you may get during the implementation of OSS notes.Drop a mail to indiagst@sap.com to get access to JAM Site.

  • Sequence of OSS notes:This is very important to implement OSS notes in correct sequence.  Most of errors messages can be avoided if you will implement in correct sequence.

  • Raise OSS message when there is error.Even after you are not able to resolve these error messages after implementing GST notes, then be ready to raise new OSS message.

  • Convert Notes instruction pdf file to text file.You are implementing manual OSS notes and some time you need to copy of paste text. Example of that you are creating new message class with lot of messages. In such situation, convert notes instruction file to text file and copy message content from text file.