diff --git a/hedera/core-concepts/fee-model.mdx b/hedera/core-concepts/fee-model.mdx
index 28194932..d413a6ce 100644
--- a/hedera/core-concepts/fee-model.mdx
+++ b/hedera/core-concepts/fee-model.mdx
@@ -373,5 +373,4 @@ If `free` is `true`, `baseFee` and `extras` are ignored during calculation but m
 <Card title="HIP-1259: Fee Collection" icon="vault" href="https://hips.hedera.com/hip/hip-1259">
   The fee collection account model that Simple Fees depends on.
 </Card>
-
 </CardGroup>
\ No newline at end of file
diff --git a/hedera/sdks-and-apis/rest-api/network.mdx b/hedera/sdks-and-apis/rest-api/network.mdx
index 3c50614c..566ca066 100644
--- a/hedera/sdks-and-apis/rest-api/network.mdx
+++ b/hedera/sdks-and-apis/rest-api/network.mdx
@@ -16,31 +16,9 @@ The following endpoints are available for the Network object:
 | --- | --- |
 | `GET /api/v1/network/supply` | Retrieves the current total supply of HBAR. |
 | `GET /api/v1/network/fees` | Fetches the latest transaction fee schedules. |
-| `POST /api/v1/network/fees` | Estimates fees for a specific transaction before submission. [HIP-1261](https://hips.hedera.com/hip/hip-1261) |
+| `POST /api/v1/network/fees` | Estimates node, network, and service fees for a protobuf-encoded transaction, including the [HIP-1313](https://hips.hedera.com/hip/hip-1313) `high_volume_multiplier`. |
 | `GET /api/v1/network/exchangerate` | Retrieves exchange rates to estimate transaction costs. |
 | `GET /api/v1/network/nodes` | Lists the network address book nodes. |
 | `GET /api/v1/network/stake` | Fetches staking-related information. |
 
-### Estimate Transaction Fees (POST)
-
-`POST /api/v1/network/fees`
-
-Introduced in [HIP-1261 (Simple Fees)](https://hips.hedera.com/hip/hip-1261), this endpoint estimates the node, network, and service fees for a transaction before it is submitted to the network. It accepts a serialized `Transaction` protobuf in the request body (`application/protobuf` or `application/x-protobuf` Content-Type) and returns a detailed fee breakdown in tinycents.
-
-Two estimation modes are available via the `mode` query parameter:
-
-| Mode | Behavior |
-| --- | --- |
-| `intrinsic` (default) | Estimates based on the transaction's inherent properties (size, signatures, keys). |
-| `state` | Also considers the mirror node's latest known state (e.g., account existence, token associations). |
-
-<Info>
-    For `state` mode, if the required network state is unavailable (e.g., due to data pruning), the endpoint falls back to `intrinsic` mode and includes a note in the response explaining the fallback.
-</Info>
-
-<Warning>
-    This endpoint currently returns stubbed (dummy) data as of mirror node `v0.145.1`. The full fee estimation implementation using the upstream fee estimation library will ship in a future release. You can integrate against the stub now to be ready when the production implementation goes live.
-</Warning>
-
-For full request/response details, parameters, and the interactive API playground, see the [API reference page](/api-reference/network/estimate-network-fees). For an overview of the Simple Fees model, see [Fee Model](/hedera/core-concepts/fee-model).
-<table><thead><tr><th>Endpoint</th><th>Description</th></tr></thead><tbody><tr><td><code>GET /api/v1/network/supply</code></td><td>Retrieves the current total supply of HBAR.</td></tr><tr><td><code>GET /api/v1/network/fees</code></td><td>Fetches the latest transaction fee schedules.</td></tr><tr><td><code>POST /api/v1/network/fees</code></td><td>Estimates fees for a specific protobuf-encoded transaction, including the [HIP-1313](https://hips.hedera.com/hip/hip-1313) <code>high_volume_multiplier</code>.</td></tr><tr><td><code>GET /api/v1/network/exchangerate</code></td><td>Retrieves exchange rates to estimate transaction costs.</td></tr><tr><td><code>GET /api/v1/network/nodes</code></td><td>Lists the network address book nodes.</td></tr><tr><td><code>GET /api/v1/network/stake</code></td><td>Fetches staking-related information.</td></tr></tbody></table>
+For full request/response details, parameters, and interactive API playgrounds for each endpoint, see the API reference pages in the sidebar. For an overview of the Simple Fees model, see [Fee Model](/hedera/core-concepts/fee-model).
diff --git a/openapi.yaml b/openapi.yaml
index ee538dba..7671b54d 100644
--- a/openapi.yaml
+++ b/openapi.yaml
@@ -941,8 +941,6 @@ paths:
             schema:
               format: binary
               type: string
-        description: A protobuf encoded HAPI Transaction
-        required: true
       responses:
         200:
           description: OK