In a temlate I create a trigger prototype with expression 

find(/Template Oracle BFT/ora.prim.OPEN_MODE{#ALIAS_PRIM},{#SID_PRIM},#1,"like","READ WRITE")=0 and length(last(/Template Oracle BFT/ora.prim.OPEN_MODE{#ALIAS_PRIM},{#SID_PRIM}))>0 and ((time()<{#MAINT_START_PRIM} and time()>{#MAINT_END_PRIM}) or {TRIGGER.VALUE}=1)

Get an error when  server performs autoregistration a host:

'Cannot link template(s) invalid token starting with "{#MAINT_START_PRIM} and time()>{#MAINT_END_PRIM}) or {TRIGGER.VALUE}=1)"'

Template linked without trigger prototype.

When I link template in a frontend I get no errors and template linked correctly and trigger created with expected value of {#MAINT_START_PRIM} and {#MAINT_END_PRIM}.

find(/Template Oracle BFT/ora.prim.OPEN_MODE{#ALIAS_PRIM},{#SID_PRIM},#1,"like","READ WRITE")=0 and length(last(/Template Oracle BFT/ora.prim.OPEN_MODE{#ALIAS_PRIM},{#SID_PRIM}))>0 and ((time()<240000 and time()>000000) or {TRIGGER.VALUE}=1)

If I quoted {#LLD_MACRO} in expression

find(/Template Oracle BFT/ora.prim.OPEN_MODE{#ALIAS_PRIM},{#SID_PRIM},#1,"like","READ WRITE")=0 and length(last(/Template Oracle BFT/ora.prim.OPEN_MODE{#ALIAS_PRIM},{#SID_PRIM}))>0 and ((time()<"{#MAINT_START_PRIM}" and time()>"{#MAINT_END_PRIM}") or {TRIGGER.VALUE}=1)

template linked to host without errors when  server performs autoregistration a host. Triggers also created when discovery executed.

Trigger created with quoted value of LLD macro

find(/Template Oracle BFT/ora.prim.OPEN_MODE{#ALIAS_PRIM},{#SID_PRIM},#1,"like","READ WRITE")=0 and length(last(/Template Oracle BFT/ora.prim.OPEN_MODE{#ALIAS_PRIM},{#SID_PRIM}))>0 and ((time()<"240000" and time()>"000000") or {TRIGGER.VALUE}=1)

In the Zabbix server 5.0 version this error does not reproduce.