Querying special characters and symbols for nested and not nested fields

I have these symbols CF7CB807

we have successfully persisted data for those but we we're having problems when retrieving those data for both nested and not nested fields. and also with wildcard

Can you guys help me how can I construct correct elasticsearch query with this.

unable to retrieve data example
(not nested) value = * sample#test#data *
(not nested) = sample#test#data
(nested) = sample#test#data
(nested) = * sample#test#data *

"normalizer": {
"testnormalizer": {
"type": "custom",
"char_filter": ,
"filter": [

Nested fields mapping:
"nestedflds": {
"type": "nested",
"properties": {
"attributeName": {
"type": "keyword",
"normalizer": "testnormalizer"
"attributeValue": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword"
"fielddata": true

Not nested mapping:
"testId": {
"type": "keyword",
"normalizer": "testnormalizer"

Anyone, please help

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