Symptom
You want to change the transport number range on the SAP system.
Solution
SAP stored the last transport request in the table E070L. You can find the information using transaction code SE16 or SE16N.
Due to non-modifiable function on transaction code SE16/SE16N, you may need to update the table from database level. Below example is on Oracle database. If let say, the latest transport number from table E070L is SIDK900181 and you wanted to change to SIDK900001.
update E070L set TRKORR='SIDK900001' where LASTNUM='TRKORR';
