diff --git a/src/connector/src/error.rs b/src/connector/src/error.rs
index d25658dfaf5e5..db773add56364 100644
--- a/src/connector/src/error.rs
+++ b/src/connector/src/error.rs
@@ -16,46 +16,22 @@ use thiserror::Error;
 
 #[derive(Error, Debug)]
 pub enum ConnectorError {
-    #[error("Parse error: {0}")]
-    Parse(&'static str),
-
-    #[error("Invalid parameter {name}: {reason}")]
-    InvalidParam { name: &'static str, reason: String },
-
-    #[error("Kafka error: {0}")]
-    Kafka(#[from] rdkafka::error::KafkaError),
-
-    #[error("Config error: {0}")]
-    Config(
-        #[source]
+    #[error("MySQL error: {0}")]
+    MySql(
+        #[from]
         #[backtrace]
-        anyhow::Error,
+        mysql_async::Error,
     ),
 
-    #[error("Connection error: {0}")]
-    Connection(
-        #[source]
-        #[backtrace]
-        anyhow::Error,
-    ),
-
-    #[error("MySQL error: {0}")]
-    MySql(#[from] mysql_async::Error),
-
     #[error("Postgres error: {0}")]
     Postgres(#[from] tokio_postgres::Error),
 
-    #[error("Pulsar error: {0}")]
-    Pulsar(
-        #[source]
-        #[backtrace]
-        anyhow::Error,
-    ),
-
     #[error(transparent)]
-    Internal(
+    Uncategorized(
         #[from]
         #[backtrace]
         anyhow::Error,
     ),
 }
+
+pub type ConnectorResult<T> = Result<T, ConnectorError>;
diff --git a/src/connector/src/source/cdc/external/mock_external_table.rs b/src/connector/src/source/cdc/external/mock_external_table.rs
index 2c8ee00f67af9..d7c39e2a9aa8b 100644
--- a/src/connector/src/source/cdc/external/mock_external_table.rs
+++ b/src/connector/src/source/cdc/external/mock_external_table.rs
@@ -19,10 +19,9 @@ use futures_async_stream::try_stream;
 use risingwave_common::row::OwnedRow;
 use risingwave_common::types::ScalarImpl;
 
-use crate::error::ConnectorError;
+use crate::error::{ConnectorError, ConnectorResult};
 use crate::source::cdc::external::{
-    CdcOffset, CdcOffsetParseFunc, ConnectorResult, ExternalTableReader, MySqlOffset,
-    SchemaTableName,
+    CdcOffset, CdcOffsetParseFunc, ExternalTableReader, MySqlOffset, SchemaTableName,
 };
 
 #[derive(Debug)]
diff --git a/src/connector/src/source/cdc/external/mod.rs b/src/connector/src/source/cdc/external/mod.rs
index 78c6c714e2bc6..f281d1ecea58a 100644
--- a/src/connector/src/source/cdc/external/mod.rs
+++ b/src/connector/src/source/cdc/external/mod.rs
@@ -17,7 +17,7 @@ mod postgres;
 
 use std::collections::HashMap;
 
-use anyhow::{anyhow, Context};
+use anyhow::Context;
 use futures::stream::BoxStream;
 use futures::{pin_mut, StreamExt};
 use futures_async_stream::try_stream;
@@ -32,13 +32,11 @@ use risingwave_common::types::DataType;
 use risingwave_common::util::iter_util::ZipEqFast;
 use serde_derive::{Deserialize, Serialize};
 
-use crate::error::ConnectorError;
+use crate::error::{ConnectorError, ConnectorResult};
 use crate::parser::mysql_row_to_owned_row;
 use crate::source::cdc::external::mock_external_table::MockExternalTableReader;
 use crate::source::cdc::external::postgres::{PostgresExternalTableReader, PostgresOffset};
 
-pub type ConnectorResult<T> = std::result::Result<T, ConnectorError>;
-
 #[derive(Debug)]
 pub enum CdcTableType {
     Undefined,
@@ -77,10 +75,7 @@ impl CdcTableType {
             Self::Postgres => Ok(ExternalTableReaderImpl::Postgres(
                 PostgresExternalTableReader::new(with_properties, schema).await?,
             )),
-            _ => bail!(ConnectorError::Config(anyhow!(
-                "invalid external table type: {:?}",
-                *self
-            ))),
+            _ => bail!("invalid external table type: {:?}", *self),
         }
     }
 }
@@ -405,19 +400,11 @@ impl MySqlExternalTableReader {
                             DataType::Date => Value::from(value.into_date().0),
                             DataType::Time => Value::from(value.into_time().0),
                             DataType::Timestamp => Value::from(value.into_timestamp().0),
-                            _ => {
-                                return Err(ConnectorError::Internal(anyhow!(
-                                    "unsupported primary key data type: {}",
-                                    ty
-                                )))
-                            }
+                            _ => bail!("unsupported primary key data type: {}", ty),
                         };
-                        Ok((pk.clone(), val))
+                        ConnectorResult::Ok((pk.clone(), val))
                     } else {
-                        Err(ConnectorError::Internal(anyhow!(
-                            "primary key {} cannot be null",
-                            pk
-                        )))
+                        bail!("primary key {} cannot be null", pk);
                     }
                 })
                 .try_collect()?;
diff --git a/src/connector/src/source/cdc/external/postgres.rs b/src/connector/src/source/cdc/external/postgres.rs
index f8f0c9d402347..bd8a0b51c04e7 100644
--- a/src/connector/src/source/cdc/external/postgres.rs
+++ b/src/connector/src/source/cdc/external/postgres.rs
@@ -28,11 +28,11 @@ use thiserror_ext::AsReport;
 use tokio_postgres::types::PgLsn;
 use tokio_postgres::NoTls;
 
-use crate::error::ConnectorError;
+use crate::error::{ConnectorError, ConnectorResult};
 use crate::parser::postgres_row_to_owned_row;
 use crate::source::cdc::external::{
-    CdcOffset, CdcOffsetParseFunc, ConnectorResult, DebeziumOffset, ExternalTableConfig,
-    ExternalTableReader, SchemaTableName,
+    CdcOffset, CdcOffsetParseFunc, DebeziumOffset, ExternalTableConfig, ExternalTableReader,
+    SchemaTableName,
 };
 
 #[derive(Debug, Clone, Default, PartialEq, Serialize, Deserialize)]
diff --git a/src/connector/src/source/pulsar/source/reader.rs b/src/connector/src/source/pulsar/source/reader.rs
index 7181710b70868..139af839bd16d 100644
--- a/src/connector/src/source/pulsar/source/reader.rs
+++ b/src/connector/src/source/pulsar/source/reader.rs
@@ -15,7 +15,7 @@
 use std::collections::HashMap;
 use std::time::{SystemTime, UNIX_EPOCH};
 
-use anyhow::{anyhow, Context};
+use anyhow::Context;
 use arrow_array::{Int32Array, Int64Array, RecordBatch};
 use async_trait::async_trait;
 use futures::StreamExt;
@@ -32,7 +32,6 @@ use risingwave_common::array::{DataChunk, StreamChunk};
 use risingwave_common::catalog::ROWID_PREFIX;
 use risingwave_common::{bail, ensure};
 
-use crate::error::ConnectorError;
 use crate::parser::ParserConfig;
 use crate::source::pulsar::split::PulsarSplit;
 use crate::source::pulsar::{PulsarEnumeratorOffset, PulsarProperties};
@@ -398,10 +397,11 @@ impl PulsarIcebergReader {
     fn build_iceberg_configs(&self) -> anyhow::Result<HashMap<String, String>> {
         let mut iceberg_configs = HashMap::new();
 
-        let bucket =
-            self.props.iceberg_bucket.as_ref().ok_or_else(|| {
-                ConnectorError::Pulsar(anyhow!("Iceberg bucket is not configured"))
-            })?;
+        let bucket = self
+            .props
+            .iceberg_bucket
+            .as_ref()
+            .context("Iceberg bucket is not configured")?;
 
         iceberg_configs.insert(CATALOG_TYPE.to_string(), "storage".to_string());
         iceberg_configs.insert(CATALOG_NAME.to_string(), "pulsar".to_string());