Post Result Show "type": "entity.too.large",

I create a Post API to transfer a CSV data. When i click SEND, it give:

“expected”: 3917800,
“length”: 3917800,
“limit”: 102400,
“type”: “entity.too.large”,
“level”: “error”,
“event”: “request entity too large”,
“timestamp”: 1730204397803,
“entity.name”: “echo: production”,
“entity.type”: “SERVICE”,
“hostname”: “echo-deployment-production-64bf6699bb-5x4c5”,
“trace.id”: “7014c8bff777bdbca9d0a25780a481ab”,
“span.id”: “7e8f3f7ff5ef9ff8”,
“entity.guid”: “MjY2NTkxOHxBUE18QVBQTElDQVRJT058MTQxNzMwNTI4Ng”
}

When i try with small data, no issue.

I use web.postman. Is there anyway to increase post_max_size??

Kindly help how to solve this issue. TQ