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 9b2a24b6..1bdc573a 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
@@ -10,6 +10,7 @@ import android.os.Build
 import android.os.Bundle
 import android.os.Parcelable
 import android.text.InputType
+import android.text.InputType.TYPE_CLASS_NUMBER
 import android.text.InputType.TYPE_CLASS_TEXT
 import android.util.Log.d
 import android.view.KeyEvent
@@ -48,6 +49,7 @@ import es.verdnatura.presentation.view.feature.collection.adapter.SaleAdapter
 import es.verdnatura.presentation.view.feature.main.activity.MainActivity
 import es.verdnatura.presentation.view.feature.pasillero.model.PasillerosItemVO
 import es.verdnatura.presentation.view.feature.sacador.model.*
+import org.json.JSONObject
 
 
 @Suppress("UNUSED_ANONYMOUS_PARAMETER")
@@ -266,8 +268,16 @@ class CollectionFragment(
     }
 
 
-    private fun showPrevia() {
+    private fun markPrevia(saleGroupScanned: String) {
+        sales.forEachIndexed { pos, s ->
+            if (!s.saleGroupFk.isNullOrEmpty() && s.saleGroupFk == saleGroupScanned) {
+                markLine(pos, type)
+            }
+        }
+    }
 
+    private fun showPrevia() {
+        customDialogList.getEditText().setRawInputType(TYPE_CLASS_NUMBER)
         customDialogList.setTitle(getString(R.string.scanPreviousTicket))
             .setOkButton(getString(R.string.end)) {
                 ma.hideKeyboard(customDialogList.getEditText())
@@ -283,12 +293,7 @@ class CollectionFragment(
                 if (!customDialogList.getValue().isEmpty()) {
                     ma.hideKeyboard(customDialogList.getEditText())
                     var saleGroupScanned = customDialogList.getValue()
-                    sales.forEachIndexed { pos, s ->
-                        if (!s.saleGroupFk.isNullOrEmpty() && s.saleGroupFk == saleGroupScanned) {
-                            markLine(pos, type)
-                        }
-                    }
-
+                    markPrevia(saleGroupScanned)
                     customDialogList.dismiss()
                 }
                 customDialogList.setValue("")
@@ -356,14 +361,18 @@ class CollectionFragment(
                     //de momento solo está el qr de artículo
                     isScanned =
                         event != null && event.action == ACTION_DOWN && event.keyCode == KeyEvent.KEYCODE_ENTER
-                    var myItem = try {
-                        itemScanValue(
-                            binding.scanInput.text.toString(),
-                            "buy",
-                            "more"
-                        ).toString()
-                    } catch (ex: Exception) {
-                        binding.scanInput.text.toString()
+
+                    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)
+
+                            }
+                    } else {
+                        findSale(binding.scanInput.text.toString())
                     }
 
                     buttonPushedGetCollection = false