Hi,
With respect to the MAX upload size you can modify it in the "sldprofile
.xml" file located in /usr/sap/[...]/SYS/global/sld as described in SAP
Note #1326081?
It also appears that the limit has not been changed successfully, same value in error?
Did you try to restart import after increasing value, recommend increase to 30MB
given the content length.
Regards,
Aidan