diff --git a/app/src/main/java/es/verdnatura/presentation/view/feature/collection/fragment/CollectionFragment.kt b/app/src/main/java/es/verdnatura/presentation/view/feature/collection/fragment/CollectionFragment.kt
index 1bdc573a..93649bc4 100644
--- a/app/src/main/java/es/verdnatura/presentation/view/feature/collection/fragment/CollectionFragment.kt
+++ b/app/src/main/java/es/verdnatura/presentation/view/feature/collection/fragment/CollectionFragment.kt
@@ -268,12 +268,28 @@ class CollectionFragment(
     }
 
 
-    private fun markPrevia(saleGroupScanned: String) {
-        sales.forEachIndexed { pos, s ->
-            if (!s.saleGroupFk.isNullOrEmpty() && s.saleGroupFk == saleGroupScanned) {
-                markLine(pos, type)
+    private fun markPrevia(saleGroupScanned: String):Boolean {
+
+        for (indice in sales.indices) {
+            if (!sales[indice].saleGroupFk.isNullOrEmpty() && sales[indice].saleGroupFk == saleGroupScanned) {
+
+                when (type) {
+                    CONTROLADOR -> markLine(indice, type)
+                    SACADOR -> {
+                        viewModel.saleTracking_add(
+                            saleGroupScanned.toInt()
+                        )
+                        return true
+                    }
+
+                }
+                if (mpok != null) {
+                    mpok!!.start()
+                }
+
             }
         }
+        return false
     }
 
     private fun showPrevia() {
@@ -363,14 +379,22 @@ class CollectionFragment(
                         event != null && event.action == ACTION_DOWN && event.keyCode == KeyEvent.KEYCODE_ENTER
 
                     if (itemScanIsQr(binding.scanInput.text.toString())) {
-                        var myQr = itemScanned(JSONObject(binding.scanInput.text.toString()))
-                        when (myQr.table) {
-                            "saleGroup" -> {
-                                markPrevia(myQr.id.toString())
-                            }
-                            "buy" -> binding.scanInput.setText(myQr.more)
+
+                            var myQr = itemScanned(JSONObject(binding.scanInput.text.toString()))
+
+                            when (myQr.table) {
+                                "saleGroup" -> {
+                                    if (type == CONTROLADOR) {
+                                        markPrevia(myQr.id.toString())
+                                    } else {
+                                        binding.scanInput.setText(myQr.id.toString())
+                                        findSale(binding.scanInput.text.toString())
+                                    }
+                                }
+                                "buy" -> binding.scanInput.setText(myQr.more)
 
                             }
+
                     } else {
                         findSale(binding.scanInput.text.toString())
                     }
@@ -1236,8 +1260,9 @@ class CollectionFragment(
     }
 
     //SEARCH AND MARK
+
+
     private fun findSale(txtscan: String) {
-        goBack = false
         var index = 0
         var isBreak = false
         var isOk = false
@@ -1245,21 +1270,9 @@ class CollectionFragment(
         goBack2 = false
 
         if (type == SACADOR) {
+            isOk=markPrevia(txtscan)
             for (saleVO in sales) {
-                //sergio: pinta si encuentra ticket o el saleGroupFk
-                if (saleVO.saleGroupFk == txtscan) {
-                    // if (saleVO.ticketFk == txtscan ) {
-                    isOk = true
-                    viewModel.saleTracking_add(
-                        txtscan.toInt()
-                    )
-                    if ((isOk) && mpok != null) {
-                        mpok!!.start()
-                    }
-
-                    break
-
-                }
+                if (isOk) break
 
                 if (saleVO.isPrepared != "1" && saleVO.isPreviousPrepared != "1") {
                     //1- Por itemFk