diff --git a/services/basic_types.proto b/services/basic_types.proto
index 15f7db3f..06fcf9c0 100644
--- a/services/basic_types.proto
+++ b/services/basic_types.proto
@@ -1480,7 +1480,7 @@ message TokenRelationship {
      * For token of type FUNGIBLE_COMMON - the balance that the Account holds in the smallest
      * denomination. For token of type NON_FUNGIBLE_UNIQUE - the number of NFTs held by the account
      */
-    uint64 balance = 3;
+    int64 balance = 3;
 
     /**
      * The KYC status of the account (KycNotApplicable, Granted or Revoked). If the token does not
@@ -1497,7 +1497,7 @@ message TokenRelationship {
     /**
      * Tokens divide into <tt>10<sup>decimals</sup></tt> pieces
      */
-    uint32 decimals = 6;
+    int32 decimals = 6;
 
     /**
      * Specifies if the relationship is created implicitly. False : explicitly associated, True :
@@ -1528,12 +1528,12 @@ message TokenBalance {
      * balance in the smallest denomination. For token of type NON_FUNGIBLE_UNIQUE - the number of
      * NFTs held by the account
      */
-    uint64 balance = 2;
+    int64 balance = 2;
 
     /**
      * Tokens divide into <tt>10<sup>decimals</sup></tt> pieces
      */
-    uint32 decimals = 3;
+    int32 decimals = 3;
 }
 
 /**
diff --git a/services/crypto_create.proto b/services/crypto_create.proto
index c01ae7bc..7bd3d8d3 100644
--- a/services/crypto_create.proto
+++ b/services/crypto_create.proto
@@ -69,7 +69,7 @@ message CryptoCreateTransactionBody {
     /**
      * The initial number of tinybars to put into the account
      */
-    uint64 initialBalance = 2;
+    int64 initialBalance = 2;
 
     /**
      * [Deprecated] ID of the account to which this account is proxy staked. If proxyAccountID is null, or is an
diff --git a/services/crypto_get_account_balance.proto b/services/crypto_get_account_balance.proto
index 6516be25..9b3f6991 100644
--- a/services/crypto_get_account_balance.proto
+++ b/services/crypto_get_account_balance.proto
@@ -73,7 +73,7 @@ message CryptoGetAccountBalanceResponse {
     /**
      * The current balance, in tinybars.
      */
-    uint64 balance = 3;
+    int64 balance = 3;
 
     /**
      * [DEPRECATED] The balances of the tokens associated to the account. This field was 
diff --git a/services/schedulable_transaction_body.proto b/services/schedulable_transaction_body.proto
index 8bbdfa89..26a21dae 100644
--- a/services/schedulable_transaction_body.proto
+++ b/services/schedulable_transaction_body.proto
@@ -81,7 +81,7 @@ message SchedulableTransactionBody {
   /**
    * The maximum transaction fee the client is willing to pay
    */
-  uint64 transactionFee = 1;
+  int64 transactionFee = 1;
 
   /**
    * A memo to include the execution record; the UTF-8 encoding may be up to 100 bytes and must not
diff --git a/services/token_burn.proto b/services/token_burn.proto
index b8283e00..510580ec 100644
--- a/services/token_burn.proto
+++ b/services/token_burn.proto
@@ -57,7 +57,7 @@ message TokenBurnTransactionBody {
      * Amount must be a positive non-zero number, not bigger than the token balance of the treasury
      * account (0; balance], represented in the lowest denomination.
      */
-    uint64 amount = 2;
+    int64 amount = 2;
 
     /**
      * Applicable to tokens of type NON_FUNGIBLE_UNIQUE. The list of serial numbers to be burned.
diff --git a/services/token_create.proto b/services/token_create.proto
index 8bb7e5b6..8ce76257 100644
--- a/services/token_create.proto
+++ b/services/token_create.proto
@@ -89,7 +89,7 @@ message TokenCreateTransactionBody {
      * token is divisible by. For tokens of type NON_FUNGIBLE_UNIQUE - value
      * must be 0
      */
-    uint32 decimals = 3;
+    int32 decimals = 3;
 
     /**
      * Specifies the initial supply of tokens to be put in circulation. The
@@ -97,7 +97,7 @@ message TokenCreateTransactionBody {
      * lowest denomination possible. In the case for NON_FUNGIBLE_UNIQUE Type
      * the value must be 0
      */
-    uint64 initialSupply = 4;
+    int64 initialSupply = 4;
 
     /**
      * The account which will act as a treasury for the token. This account
diff --git a/services/token_mint.proto b/services/token_mint.proto
index c2091b67..c36773b4 100644
--- a/services/token_mint.proto
+++ b/services/token_mint.proto
@@ -56,7 +56,7 @@ message TokenMintTransactionBody {
      * Amount must be a positive non-zero number represented in the lowest denomination of the
      * token. The new supply must be lower than 2^63.
      */
-    uint64 amount = 2;
+    int64 amount = 2;
 
     /**
      * Applicable to tokens of type NON_FUNGIBLE_UNIQUE. A list of metadata that are being created.
diff --git a/services/token_wipe_account.proto b/services/token_wipe_account.proto
index 357b1fdb..1f47d124 100644
--- a/services/token_wipe_account.proto
+++ b/services/token_wipe_account.proto
@@ -72,7 +72,7 @@ message TokenWipeAccountTransactionBody {
      * account. Amount must be a positive non-zero number in the lowest denomination possible, not
      * bigger than the token balance of the account (0; balance]
      */
-    uint64 amount = 3;
+    int64 amount = 3;
 
     /**
      * Applicable to tokens of type NON_FUNGIBLE_UNIQUE. The list of serial numbers to be wiped.
diff --git a/services/transaction_body.proto b/services/transaction_body.proto
index 07d21ebf..86e049f8 100644
--- a/services/transaction_body.proto
+++ b/services/transaction_body.proto
@@ -102,7 +102,7 @@ message TransactionBody {
   /**
    * The maximum transaction fee the client is willing to pay
    */
-  uint64 transactionFee = 3;
+  int64 transactionFee = 3;
 
   /**
    * The transaction is invalid if consensusTimestamp > transactionID.transactionValidStart +
diff --git a/services/transaction_receipt.proto b/services/transaction_receipt.proto
index 0a59e1d8..0bb34fce 100644
--- a/services/transaction_receipt.proto
+++ b/services/transaction_receipt.proto
@@ -144,7 +144,7 @@ message TransactionReceipt {
      * supply of this token. For non fungible tokens - the total number of NFTs issued for a given
      * tokenID
      */
-    uint64 newTotalSupply = 11;
+    int64 newTotalSupply = 11;
 
     /**
      * In the receipt of a ScheduleCreate, the id of the newly created Scheduled Entity
diff --git a/services/transaction_record.proto b/services/transaction_record.proto
index cd37ad9f..f0cc285f 100644
--- a/services/transaction_record.proto
+++ b/services/transaction_record.proto
@@ -67,7 +67,7 @@ message TransactionRecord {
      * The actual transaction fee charged, not the original transactionFee value from
      * TransactionBody
      */
-    uint64 transactionFee = 6;
+    int64 transactionFee = 6;
 
     oneof body {
         /**
diff --git a/services/transaction_response.proto b/services/transaction_response.proto
index 38061cf3..73969765 100644
--- a/services/transaction_response.proto
+++ b/services/transaction_response.proto
@@ -45,5 +45,5 @@ message TransactionResponse {
      * If the response code was INSUFFICIENT_TX_FEE, the actual transaction fee that would be
      * required to execute the transaction.
 	 */
-	uint64 cost = 2;
+	int64 cost = 2;
 }