diff --git a/src/increase/types/check_transfer.py b/src/increase/types/check_transfer.py
index fd5566bea..1516cbf17 100644
--- a/src/increase/types/check_transfer.py
+++ b/src/increase/types/check_transfer.py
@@ -132,7 +132,7 @@ class PhysicalCheck(BaseModel):
     note: Optional[str]
     """The descriptor that will be printed on the letter included with the check."""
 
-    recipient_name: Optional[str]
+    recipient_name: str
     """The name that will be printed on the check."""
 
     return_address: Optional[PhysicalCheckReturnAddress]
diff --git a/src/increase/types/declined_transaction.py b/src/increase/types/declined_transaction.py
index 3341b2adf..068468afb 100644
--- a/src/increase/types/declined_transaction.py
+++ b/src/increase/types/declined_transaction.py
@@ -46,6 +46,7 @@ class SourceACHDecline(BaseModel):
         "group_locked",
         "insufficient_funds",
         "misrouted_return",
+        "return_of_erroneous_or_reversing_debit",
         "no_ach_route",
         "originator_request",
         "transaction_not_allowed",
@@ -61,6 +62,7 @@ class SourceACHDecline(BaseModel):
     - `group_locked` - Your account is inactive.
     - `insufficient_funds` - Your account contains insufficient funds.
     - `misrouted_return` - Other.
+    - `return_of_erroneous_or_reversing_debit` - Other.
     - `no_ach_route` - The account number that was debited does not exist.
     - `originator_request` - Other.
     - `transaction_not_allowed` - The transaction is not allowed per Increase's
diff --git a/src/increase/types/simulations/ach_transfer_simulation.py b/src/increase/types/simulations/ach_transfer_simulation.py
index 328b1e531..478b5293f 100644
--- a/src/increase/types/simulations/ach_transfer_simulation.py
+++ b/src/increase/types/simulations/ach_transfer_simulation.py
@@ -78,6 +78,7 @@ class DeclinedTransactionSourceACHDecline(BaseModel):
         "group_locked",
         "insufficient_funds",
         "misrouted_return",
+        "return_of_erroneous_or_reversing_debit",
         "no_ach_route",
         "originator_request",
         "transaction_not_allowed",
@@ -93,6 +94,7 @@ class DeclinedTransactionSourceACHDecline(BaseModel):
     - `group_locked` - Your account is inactive.
     - `insufficient_funds` - Your account contains insufficient funds.
     - `misrouted_return` - Other.
+    - `return_of_erroneous_or_reversing_debit` - Other.
     - `no_ach_route` - The account number that was debited does not exist.
     - `originator_request` - Other.
     - `transaction_not_allowed` - The transaction is not allowed per Increase's
@@ -1344,6 +1346,9 @@ class TransactionSourceFeePayment(BaseModel):
     - `USD` - US Dollar (USD)
     """
 
+    fee_period_start: date
+    """The start of this payment's fee period, usually the first day of a month."""
+
 
 class TransactionSourceInboundACHTransfer(BaseModel):
     amount: int
diff --git a/src/increase/types/simulations/card_authorization_simulation.py b/src/increase/types/simulations/card_authorization_simulation.py
index 473d3264c..361abc0ec 100644
--- a/src/increase/types/simulations/card_authorization_simulation.py
+++ b/src/increase/types/simulations/card_authorization_simulation.py
@@ -59,6 +59,7 @@ class DeclinedTransactionSourceACHDecline(BaseModel):
         "group_locked",
         "insufficient_funds",
         "misrouted_return",
+        "return_of_erroneous_or_reversing_debit",
         "no_ach_route",
         "originator_request",
         "transaction_not_allowed",
@@ -74,6 +75,7 @@ class DeclinedTransactionSourceACHDecline(BaseModel):
     - `group_locked` - Your account is inactive.
     - `insufficient_funds` - Your account contains insufficient funds.
     - `misrouted_return` - Other.
+    - `return_of_erroneous_or_reversing_debit` - Other.
     - `no_ach_route` - The account number that was debited does not exist.
     - `originator_request` - Other.
     - `transaction_not_allowed` - The transaction is not allowed per Increase's
diff --git a/src/increase/types/simulations/inbound_real_time_payments_transfer_simulation_result.py b/src/increase/types/simulations/inbound_real_time_payments_transfer_simulation_result.py
index a7512cee9..845a84c96 100644
--- a/src/increase/types/simulations/inbound_real_time_payments_transfer_simulation_result.py
+++ b/src/increase/types/simulations/inbound_real_time_payments_transfer_simulation_result.py
@@ -78,6 +78,7 @@ class DeclinedTransactionSourceACHDecline(BaseModel):
         "group_locked",
         "insufficient_funds",
         "misrouted_return",
+        "return_of_erroneous_or_reversing_debit",
         "no_ach_route",
         "originator_request",
         "transaction_not_allowed",
@@ -93,6 +94,7 @@ class DeclinedTransactionSourceACHDecline(BaseModel):
     - `group_locked` - Your account is inactive.
     - `insufficient_funds` - Your account contains insufficient funds.
     - `misrouted_return` - Other.
+    - `return_of_erroneous_or_reversing_debit` - Other.
     - `no_ach_route` - The account number that was debited does not exist.
     - `originator_request` - Other.
     - `transaction_not_allowed` - The transaction is not allowed per Increase's
@@ -1344,6 +1346,9 @@ class TransactionSourceFeePayment(BaseModel):
     - `USD` - US Dollar (USD)
     """
 
+    fee_period_start: date
+    """The start of this payment's fee period, usually the first day of a month."""
+
 
 class TransactionSourceInboundACHTransfer(BaseModel):
     amount: int
diff --git a/src/increase/types/simulations/interest_payment_simulation_result.py b/src/increase/types/simulations/interest_payment_simulation_result.py
index 1941b0070..0a16082ea 100644
--- a/src/increase/types/simulations/interest_payment_simulation_result.py
+++ b/src/increase/types/simulations/interest_payment_simulation_result.py
@@ -726,6 +726,9 @@ class TransactionSourceFeePayment(BaseModel):
     - `USD` - US Dollar (USD)
     """
 
+    fee_period_start: date
+    """The start of this payment's fee period, usually the first day of a month."""
+
 
 class TransactionSourceInboundACHTransfer(BaseModel):
     amount: int
diff --git a/src/increase/types/simulations/wire_transfer_simulation.py b/src/increase/types/simulations/wire_transfer_simulation.py
index 885954879..df1169dd7 100644
--- a/src/increase/types/simulations/wire_transfer_simulation.py
+++ b/src/increase/types/simulations/wire_transfer_simulation.py
@@ -726,6 +726,9 @@ class TransactionSourceFeePayment(BaseModel):
     - `USD` - US Dollar (USD)
     """
 
+    fee_period_start: date
+    """The start of this payment's fee period, usually the first day of a month."""
+
 
 class TransactionSourceInboundACHTransfer(BaseModel):
     amount: int
diff --git a/src/increase/types/transaction.py b/src/increase/types/transaction.py
index 0f22055eb..222d431c7 100644
--- a/src/increase/types/transaction.py
+++ b/src/increase/types/transaction.py
@@ -725,6 +725,9 @@ class SourceFeePayment(BaseModel):
     - `USD` - US Dollar (USD)
     """
 
+    fee_period_start: date
+    """The start of this payment's fee period, usually the first day of a month."""
+
 
 class SourceInboundACHTransfer(BaseModel):
     amount: int