diff --git a/include/interfaces.h b/include/interfaces.h
index c1794e5..774d3d6 100644
--- a/include/interfaces.h
+++ b/include/interfaces.h
@@ -241,7 +241,19 @@ struct T_dynamicCondition
         char        jsonValid_serial;
         char        jsonValid_time;
         char        lastFileType;
-
+// 44
+        uint8_t     MifCardHolder[8];
+        uint8_t     resultOfLastTemplPrint;
+                    // 0: unknown or printing in progress
+                    // 1: OK, doc was printed   2: error, doc was not printed
+        uint8_t     lastPrinterStatus;
+                    //        0: printer OK
+                    //          bit0: near paper end          bit1: no paper
+                    //          bit2: temperature error       bit3: error head open
+                    //          bit4: paper jam in cutter
+                    //          bit6: no response             bit7: serial rec. error
+                    //			bit5: printer not ready
+//54
 };
 
 struct T_extTime
@@ -1432,7 +1444,8 @@ public:
     virtual bool prn_printTestTicket(void) const=0;
         // return true if sending to DC OK, false if cmd-stack is full
 
-    virtual bool cash_startPayment(uint16_t amount) const=0;
+    virtual bool cash_startPayment(uint32_t amount) const=0;
+        // 17.4.23TS: extended to 32bit
 
     virtual uint32_t getInsertedAmount(void) const=0;
 
@@ -1463,7 +1476,6 @@ public:
     virtual uint64_t sys_getWakeSource(void) const =0;
         // retval: 6 bytes, bit coded, 1=event keeps DC awake
 
-    //virtual void sys_getDeviceConditions(struct T_moduleCondition *devCond) const=0;
     virtual void sys_getDeviceConditions(uint8_t *leng, uint8_t *data) const=0;
     /*
 
@@ -1501,7 +1513,6 @@ public:
      */
 
     virtual void sys_getDeviceConditions(struct T_moduleCondition *devCond) const=0;
-    //virtual void sys_getDynMachineConditions(struct T_dynamicCondition *dynMachCond) const=0;
     virtual void sys_getDynMachineConditions(uint8_t *leng, uint8_t *data) const=0;
 /*
 
@@ -1575,6 +1586,23 @@ public:
     virtual uint16_t cash_getNrCoinsInVault(void) const=0;
 
 
+    virtual uint8_t prn_getPrintResult() const=0;
+
+    // in case of print-error get detailed error:
+    virtual uint8_t prn_getCurrentPrinterState() const=0;
+        //        0: printer OK
+        //          bit0: near paper end          bit1: no paper
+        //          bit2: temperature error       bit3: error head open
+        //          bit4: paper jam in cutter
+        //          bit6: no response             bit7: serial rec. error
+        //			bit5: printer not ready
+
+signals:
+    virtual void hwapi_templatePrintFinished_OK(void) const=0;
+    virtual void hwapi_templatePrintFinished_Err(void) const=0;
+    virtual void hwapi_gotNewCoin(void) const=0;
+    virtual void hwapi_vendStopByMax(void) const=0;
+    virtual void hwapi_vendStopByPushbutton(void) const=0;
 
 };
 
@@ -1599,7 +1627,8 @@ public:
 //#define HWINF_iid "Atb.Psa2020.software.HWapi/3.1"
 //#define HWINF_iid "Atb.Psa1256ptu5.software.HWapi/3.1"
 //#define HWINF_iid "Atb.Psa1256ptu5.software.HWapi/3.3"
-#define HWINF_iid "Atb.Psa1256ptu5.software.HWapi/3.4"
+//#define HWINF_iid "Atb.Psa1256ptu5.software.HWapi/3.4"
+#define HWINF_iid "Atb.Psa1256ptu5.software.HWapi/3.5"