Strange data comes out as field values. Same as the source path

[nmnank]

I have a strange problem.

In the search header, the value of the field created in props.conf is the same as the source path.

SH - props.conf
LOOKUP-center_tag_dest = ldcc_portal_asset IP AS dest OUTPUT group_id AS tag_dest

result

Normal values ​​also appear but some of these problems are found

I want to know what is the cause and how to solve it.

[nmnank]

result
source::udp:20001|host::61.111.55.40|ips_sniperips_evt

[nmnank]

Strange data found in source type that doesn't match stanza

props.conf
stanza - [(?::){0}*_*_*_*]