Hi
In the SAP support projects, as SAP consultants need to support for the business, for example if you are working any ISU utility - water project, all the business is run useing SAP ECC systems and for Business analysis and get the reports use the SAP BI.
So here SAP functional consultants (like SAP Billing,SAP DM,SAP FICA) support’s different applications, if end user’s have any issue’s, they will raise tickets to respective funcational consultant’s.
As ABAPer, if any customs code is used in the development of different functionality, to understand the functional consults need ABAPer’s help.
And even if any new custom developments, to write the coding need ABAPer’s help.
You can also become techno functional consultant.