struggling with logical replication and WAL segments removed even with max_slot_wal_keep_size = -1

All;


we have been fighting logical replication for some timetgres v14,  
max_slot_wal_keep_size = -1 but I still get this kind of error on the 
publisher every few days:

2026-01-03 18:21:00.497 UTC [770693] [unknown]@[unknown] LOG: connection 
received: host=10-173-12-128.masked.cc.com port=50000
2026-01-03 18:21:00.498 UTC [770693] postgres@cc LOG:  replication 
connection authorized: user=postgres 
application_name=pg_1415516682_sync_1415489254_7242369616429431728
2026-01-03 18:21:01.301 UTC [770693] postgres@cc LOG:  received 
replication command: START_REPLICATION SLOT 
"pg_1415516682_sync_1415489254_7242369616429431728" LOGICAL 9D6/AB9CE2B8 
(proto_version '2', publication_names '"sit_cc_ch_pub"')
2026-01-03 18:21:01.301 UTC [770693] postgres@cc STATEMENT: 
START_REPLICATION SLOT 
"pg_1415516682_sync_1415489254_7242369616429431728" LOGICAL 9D6/AB9CE2B8 
(proto_version '2', publication_names '"sit_cc_ch_pub"')
2026-01-03 18:21:01.301 UTC [770693] postgres@cc LOG:  starting logical 
decoding for slot "pg_1415516682_sync_1415489254_7242369616429431728"
2026-01-03 18:21:01.301 UTC [770693] postgres@cc DETAIL: Streaming 
transactions committing after 9D6/AB9CE2B8, reading WAL from 9D6/AB9CE280.
2026-01-03 18:21:01.301 UTC [770693] postgres@cc STATEMENT: 
START_REPLICATION SLOT 
"pg_1415516682_sync_1415489254_7242369616429431728" LOGICAL 9D6/AB9CE2B8 
(proto_version '2', publication_names '"sit_cc_ch_pub"')
2026-01-03 18:21:01.301 UTC [770693] postgres@cc ERROR:  requested WAL 
segment 00000002000009D6000000AB has already been removed
2026-01-03 18:21:01.301 UTC [770693] postgres@cc STATEMENT: 
START_REPLICATION SLOT 
"pg_1415516682_sync_1415489254_7242369616429431728" LOGICAL 9D6/AB9CE2B8 
(proto_version '2', publication_names '"sit_cc_ch_pub"')
2026-01-03 18:21:01.301 UTC [770693] postgres@cc LOG: disconnection: 
session time: 0:00:00.805 user=postgres database=cc 
host=10-173-12-128.ssnc-corp.cloud port=50000



any advice would be greatly appreciated, thanks in advance