It was found that in yocto BSP 29 (for S32G274A on the Evaluation Board S32G-PROCEVB-S) a new ddr configuration files were added named "DDR_Density.c and DDR_Density.h" which were not generated before by the earlier version of S32DS v3.2 and v3.3.
In order to try to see how those files are generated the latest version of the S32DS V3.4.1 was installed with the packages shown in the attached screenshot.
Then two issues were found:
1- Upon trying to open the DDR tool in the S32DS the GUI doesn't open at all as shown in the second attached scrreen shot, all the other tools like the pin configuration tool opens but not the DDR.
2- I'm no longer able to install the SDK "S32SDK_S32G274_BETA_0.9.0.exe" with S32DS v3.4, it was working fine with S32DS v3.2 and S32DS v3.3
This question has been answered in the following thread