/SAPAPO/OM_UPGR_TSTR_CHECK errors --- how to correct

Hi Gurus

I have run /SAPAPO/OM_UPGR_TSTR_CHECK, now it has given 2 types of messages in the log

@5D\QWarning@ Res. WR_xxx_001 Location XXXX PVers 000: TimeStream cannot be gener., break too long

@5D\QWarning@ Res. WI_xxx_001, loc. XXXX, planning vers. 000: time stream regenerated (was faulty)

I am not sure how to solve these. any sugestions?

Thanks

Abhishek Rai