The NFe Development team recently released the SAP Note “1965381 – Contingency: Changes in active server status check fuctionality”
with the following information:
“Be aware that SVC contingency was not designed to work with the numbering and RFC execution for creation of the XML file in the same LUW (RFC Execution = SPACE).”
It means that if you still use the non-decouple solution ( Field CALLRFC from table J_1bb2 in blanks ) you will not be able to use the new SVC contingency system .
The suggestion to avoid this inconvenience is to implement the decouple solution. The steps to implement the customizing needed for decouple and the solution itself can be found
in the SAP Note 1265172 – NF-e – Decouple RFC from DB Update