When doing an srmPrepareToPut specifying the expected size, older versions return the fileSize field, while 1.11.1 return NULL.

$ clientSRM ptp -p -v N -e omii005-vm03.cnaf.infn.it:8444 -s srm://omii005-vm03.cnaf.infn.it:8444/srm/managerv2?SFN=/testers.eu-emi.eu/abc/test,1
============================================================
Sending PtP request to: omii005-vm03.cnaf.infn.it:8444
Before execute:
Afer execute:
Request Status Code 17
Poll Flag 1
============================================================
Polling request status:
Current status: SRM_REQUEST_QUEUED (Ctrl+c to stop polling).
============================================================
Request status:
statusCode="SRM_SUCCESS"(0)
explanation="All chunks successfully handled!"
============================================================
SRM Response:
requestToken="048f728a-8dad-406e-8b30-ae81eab590b4"
remainingTotalRequestTime=NULL
arrayOfFileStatuses (size=1)
[0] SURL="srm://omii005-vm03.cnaf.infn.it:8444/srm/managerv2?SFN=/testers.eu-emi.eu/abc/test"
[0] status: statusCode="SRM_SPACE_AVAILABLE"(24)
explanation="srmPrepareToPut successfully handled!"
[0] fileSize=NULL
[0] estimatedWaitTime=NULL
[0] remainingPinLifetime=NULL
[0] remainingFileLifetime=NULL
[0] TURL="gsiftp://omii005-vm03.cnaf.infn.it:2811//storage/testers.eu-emi.eu/abc/test"
[0] transferProtocolInfo=NULL
============================================================

This seems to confuse some FTS instances.