Hey Robbie1194,
Can you try changing limit in limits.conf.
limit = (integer)
* The maximum number of fields that an automatic key-value field extraction
(auto kv) can generate at search time.
* If search-time field extractions are disabled (KV_MODE=none in props.conf)
then this setting determines the number of index-time fields that will be
returned.
* The summary fields 'host', 'index', 'source', 'sourcetype', 'eventtype',
'linecount', 'splunk_server', and 'splunk_server_group' do not count against
this limit and will always be returned.
* Increase this setting if, for example, you have indexed data with a large
number of columns and want to ensure that searches display all fields from
the data.
* Default: 100
Hope this helps!!!
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