diff --git a/server/src/tables_data/handlers/put_table_data.rs b/server/src/tables_data/handlers/put_table_data.rs
index 44bd4c5..6eef2d1 100644
--- a/server/src/tables_data/handlers/put_table_data.rs
+++ b/server/src/tables_data/handlers/put_table_data.rs
@@ -19,15 +19,12 @@ pub async fn put_table_data(
     let mut processed_data = HashMap::new();
     let mut null_fields = Vec::new();
 
+    // CORRECTED: Generic handling for all fields.
+    // Any field with an empty string will be added to the null_fields list.
+    // The special, hardcoded logic for "firma" has been removed.
     for (key, value) in request.data {
         let trimmed = value.trim().to_string();
-
-        if key == "firma" && trimmed.is_empty() {
-            return Err(Status::invalid_argument("Firma cannot be empty"));
-        }
-
-        // Store fields that should be set to NULL
-        if key != "firma" && trimmed.is_empty() {
+        if trimmed.is_empty() {
             null_fields.push(key);
         } else {
             processed_data.insert(key, trimmed);
@@ -73,8 +70,9 @@ pub async fn put_table_data(
         columns.push((name, sql_type));
     }
 
-    // Validate system columns
-    let system_columns = ["firma", "deleted"];
+    // CORRECTED: "firma" is not a system column.
+    // It should be treated as a user-defined column.
+    let system_columns = ["deleted"];
     let user_columns: Vec<&String> = columns.iter().map(|(name, _)| name).collect();
 
     // Validate input columns
@@ -91,9 +89,11 @@ pub async fn put_table_data(
 
     // Add data parameters for non-empty fields
     for (col, value) in &processed_data {
+        // CORRECTED: The logic for "firma" is removed from this match.
+        // It will now fall through to the `else` block and have its type
+        // correctly looked up from the `columns` vector.
         let sql_type = if system_columns.contains(&col.as_str()) {
             match col.as_str() {
-                "firma" => "TEXT",
                 "deleted" => "BOOLEAN",
                 _ => return Err(Status::invalid_argument("Invalid system column")),
             }
@@ -121,7 +121,7 @@ pub async fn put_table_data(
                 let val = value.parse::<bool>()
                     .map_err(|_| Status::invalid_argument(format!("Invalid boolean for {}", col)))?;
                 params.add(val)
-                    .map_err(|e| Status::internal(format!("Failed to add boolean parameter for {}极 {}", col, e)))?;
+                    .map_err(|e| Status::internal(format!("Failed to add boolean parameter for {}: {}", col, e)))?;
             },
             "TIMESTAMPTZ" => {
                 let dt = DateTime::parse_from_rfc3339(value)
@@ -129,6 +129,13 @@ pub async fn put_table_data(
                 params.add(dt.with_timezone(&Utc))
                     .map_err(|e| Status::internal(format!("Failed to add timestamp parameter for {}: {}", col, e)))?;
             },
+            // ADDED: BIGINT handling for completeness, if needed for other columns.
+            "BIGINT" => {
+                let val = value.parse::<i64>()
+                    .map_err(|_| Status::invalid_argument(format!("Invalid integer for {}", col)))?;
+                params.add(val)
+                    .map_err(|e| Status::internal(format!("Failed to add integer parameter for {}: {}", col, e)))?;
+            },
             _ => return Err(Status::invalid_argument(format!("Unsupported type {}", sql_type))),
         }