Installed ADD-ON SAP TM 9.3 on SAP Netweaver 740 SPS 13. ADD-ON SAP TM 9.3 must not be installed on existing SAP SCM 7.0.
When executing transaction code /n/scmtms/res01 and then press enter key, immediately error message appeared " Transaction aborted; switch for SAP TM resource master is inactive".
Transaction code SPAM
As shown in the above Kernel patch number is 300. This is the latest SAP kernel patch.
But the error is nothing to do with kernel patch.
root cause of this issue was due to program error.
The main program is "/SCMB/TMS_RESOURCE". ENter tx code se38 as shown in the figure below
Click Display
Scroll down till you find the lince code as shown in the figure below
As shown in the above figure, it should be corrected as "EQ abap_true."
This is because after double click on "scmb/cl_tmsres_switch" another screen appeared as shown in the figure below
Then click on button just below Overwrite-Ext (highlighted in small red circle as shown in the above figure) ,
Another screen appeared. there you can see as shown in the figure below.
As shown in the above it is Active and aslo abp_true. hence change th coding as shown in the figure below
Make changes the correction by clicking from display to change. It ask for SSCR object key. Request the key in SAP MArket Place .
Save after making correction as shown in the figurer above (highlighted in yellow colour). Pop-up screen displayed for transport request number.
close the screen.
Re-execute transaction code again as shown in the figure below
Now the output of the transaction is displayed as shown in the figure below.
Finally issue resolved. No OSS note is available for the above issue.