diff --git a/internal/models/lot.go b/internal/models/lot.go
index 4a849b9..7990f38 100644
--- a/internal/models/lot.go
+++ b/internal/models/lot.go
@@ -57,9 +57,9 @@ func (StockLog) TableName() string {
 
 // LotPartnumber maps external part numbers to internal lots.
 type LotPartnumber struct {
-	Partnumber  string  `gorm:"column:partnumber;size:255;primaryKey"`
-	LotName     string  `gorm:"column:lot_name;size:255;primaryKey"`
-	Description *string `gorm:"column:description;size:10000"`
+	Partnumber  string  `gorm:"column:partnumber;size:255;primaryKey" json:"partnumber"`
+	LotName     string  `gorm:"column:lot_name;size:255;primaryKey" json:"lot_name"`
+	Description *string `gorm:"column:description;size:10000" json:"description,omitempty"`
 }
 
 func (LotPartnumber) TableName() string {
diff --git a/web/templates/admin_pricing.html b/web/templates/admin_pricing.html
index 4f2ca52..f64d742 100644
--- a/web/templates/admin_pricing.html
+++ b/web/templates/admin_pricing.html
@@ -308,6 +308,7 @@ let isCreatingPricelist = false;
 let cachedDbUsername = null;
 let syncUsersStatusTimer = null;
 let stockMappingsPage = 1;
+let stockMappingsCache = [];
 
 async function loadTab(tab) {
     currentTab = tab;
@@ -1109,16 +1110,17 @@ async function loadStockMappings(page = 1) {
         const data = await resp.json();
         if (!resp.ok) throw new Error(data.error || 'Ошибка загрузки');
         const items = data.items || [];
+        stockMappingsCache = items;
         if (items.length === 0) {
             body.innerHTML = '<tr><td colspan="4" class="px-4 py-3 text-sm text-gray-500">Нет сопоставлений</td></tr>';
         } else {
             body.innerHTML = items.map(item => `
-                <tr>
-                    <td class="px-4 py-2 text-sm font-mono">${escapeHtml(item.partnumber)}</td>
-                    <td class="px-4 py-2 text-sm text-gray-600">${escapeHtml(item.description || '—')}</td>
-                    <td class="px-4 py-2 text-sm font-mono">${escapeHtml(item.lot_name || '—')}</td>
+                <tr class="cursor-pointer hover:bg-gray-50" onclick="selectStockMappingRow('${escapeHtml((item.partnumber || item.Partnumber || '')).replace(/'/g, "\\'")}')">
+                    <td class="px-4 py-2 text-sm font-mono">${escapeHtml(item.partnumber || item.Partnumber || '—')}</td>
+                    <td class="px-4 py-2 text-sm text-gray-600">${escapeHtml(item.description || item.Description || '—')}</td>
+                    <td class="px-4 py-2 text-sm font-mono">${escapeHtml(item.lot_name || item.LotName || '—')}</td>
                     <td class="px-4 py-2 text-right">
-                        <button data-partnumber="${escapeHtml(item.partnumber)}" onclick="deleteStockMapping(this.dataset.partnumber)" class="text-red-600 hover:text-red-800 text-sm">Удалить</button>
+                        <button data-partnumber="${escapeHtml(item.partnumber || item.Partnumber || '')}" onclick="event.stopPropagation(); deleteStockMapping(this.dataset.partnumber)" class="text-red-600 hover:text-red-800 text-sm">Удалить</button>
                     </td>
                 </tr>
             `).join('');
@@ -1141,6 +1143,14 @@ async function loadStockMappings(page = 1) {
     }
 }
 
+function selectStockMappingRow(partnumber) {
+    const normalized = (partnumber || '').trim().toLowerCase();
+    const row = stockMappingsCache.find(item => ((item.partnumber || item.Partnumber || '').trim().toLowerCase() === normalized));
+    if (!row) return;
+    document.getElementById('mapping-partnumber').value = (row.partnumber || row.Partnumber || '').trim();
+    document.getElementById('mapping-lotname').value = (row.lot_name || row.LotName || '').trim();
+}
+
 async function saveStockMapping() {
     const partnumber = document.getElementById('mapping-partnumber').value.trim();
     const lotName = document.getElementById('mapping-lotname').value.trim();