diff --git a/python/src/detector.cpp b/python/src/detector.cpp
index 5393cbf6e..4a5ffc02c 100644
--- a/python/src/detector.cpp
+++ b/python/src/detector.cpp
@@ -924,17 +924,6 @@ void init_det(py::module &m) {
                        (void (Detector::*)(bool, sls::Positions)) &
                            Detector::setRxArping,
                        py::arg(), py::arg() = Positions{});
-    CppDetectorApi.def("getIndividualRxROIs",
-                       (Result<defs::ROI>(Detector::*)(sls::Positions) const) &
-                           Detector::getIndividualRxROIs,
-                       py::arg());
-    CppDetectorApi.def("getRxROI",
-                       (defs::ROI(Detector::*)() const) & Detector::getRxROI);
-    CppDetectorApi.def(
-        "setRxROI", (void (Detector::*)(const defs::ROI)) & Detector::setRxROI,
-        py::arg());
-    CppDetectorApi.def("clearRxROI",
-                       (void (Detector::*)()) & Detector::clearRxROI);
     CppDetectorApi.def(
         "getFileFormat",
         (Result<defs::fileFormat>(Detector::*)(sls::Positions) const) &
diff --git a/slsDetectorSoftware/generator/commands.yaml b/slsDetectorSoftware/generator/commands.yaml
index f33cf7be2..3b96e48f5 100644
--- a/slsDetectorSoftware/generator/commands.yaml
+++ b/slsDetectorSoftware/generator/commands.yaml
@@ -1739,12 +1739,13 @@ readout:
     PUT:
       function: startDetectorReadout
 
-rx_clearroi:
-  inherit_actions: EXECUTE_SET_COMMAND_NOID
-  help: "\n\tResets Region of interest in receiver. Default is all channels/pixels enabled."
-  actions:
-    PUT:
-      function: clearRxROI
+# TODO
+#rx_clearroi:
+#  inherit_actions: EXECUTE_SET_COMMAND_NOID
+#  help: "\n\tResets Region of interest in receiver. Default is all channels/pixels enabled."
+#  actions:
+#    PUT:
+#      function: clearRxROI
 
 ################# EXECUTE_SET_COMMAND ########################
 start:
@@ -2592,17 +2593,18 @@ rx_zmqip:
         PUT:
           argc: -1
 
-rx_roi:
-    is_description: true
-    actions:
-        GET:
-          argc: 0
-        PUT:
-          args:
-            - argc: 2
-              arg_types: [ int, int ]
-            - argc: 4
-              arg_types: [ int, int, int, int ]
+#TODO
+#rx_roi:
+#    is_description: true
+#    actions:
+#        GET:
+#          argc: 0
+#        PUT:
+#          args:
+#            - argc: 2
+#              arg_types: [ int, int ]
+#            - argc: 4
+#              arg_types: [ int, int, int, int ]
 
 ratecorr:
     is_description: true
diff --git a/slsDetectorSoftware/include/sls/Detector.h b/slsDetectorSoftware/include/sls/Detector.h
index eb679a578..fd85e427a 100644
--- a/slsDetectorSoftware/include/sls/Detector.h
+++ b/slsDetectorSoftware/include/sls/Detector.h
@@ -985,16 +985,16 @@ class Detector {
      * every minute. Useful in 10G mode. */
     void setRxArping(bool value, Positions pos = {});
 
-    /** at module level */
-    Result<defs::ROI> getIndividualRxROIs(Positions pos) const;
-
-    defs::ROI getRxROI() const;
+    std::vector<defs::ROI> getRxROI() const;
 
     /** only at multi module level without gap pixels */
-    void setRxROI(const defs::ROI value);
+    void setRxROI(const std::vector<defs::ROI>& args);
 
     void clearRxROI();
 
+    int getNumberOfUdpPortsInRxROI() const;
+
+
     ///@}
 
     /** @name File */
diff --git a/slsDetectorSoftware/src/Caller.cpp b/slsDetectorSoftware/src/Caller.cpp
index 78a6f79d7..9fb08ff69 100644
--- a/slsDetectorSoftware/src/Caller.cpp
+++ b/slsDetectorSoftware/src/Caller.cpp
@@ -10594,7 +10594,7 @@ std::string Caller::rx_arping(int action) {
 
     return os.str();
 }
-
+/*
 std::string Caller::rx_clearroi(int action) {
 
     std::ostringstream os;
@@ -10637,7 +10637,7 @@ std::string Caller::rx_clearroi(int action) {
 
     return os.str();
 }
-
+*/
 std::string Caller::rx_dbitoffset(int action) {
 
     std::ostringstream os;
diff --git a/slsDetectorSoftware/src/Caller.h b/slsDetectorSoftware/src/Caller.h
index 3e1be13ac..d1df0c0f2 100644
--- a/slsDetectorSoftware/src/Caller.h
+++ b/slsDetectorSoftware/src/Caller.h
@@ -233,7 +233,7 @@ class Caller {
     std::string runclk(int action);
     std::string runtime(int action);
     std::string rx_arping(int action);
-    std::string rx_clearroi(int action);
+    //std::string rx_clearroi(int action);
     std::string rx_dbitlist(int action);
     std::string rx_dbitoffset(int action);
     std::string rx_dbitreorder(int action);
@@ -251,7 +251,7 @@ class Caller {
     std::string rx_padding(int action);
     std::string rx_printconfig(int action);
     std::string rx_realudpsocksize(int action);
-    std::string rx_roi(int action);
+    //std::string rx_roi(int action);
     std::string rx_silent(int action);
     std::string rx_start(int action);
     std::string rx_status(int action);
@@ -580,7 +580,7 @@ class Caller {
         {"runclk", &Caller::runclk},
         {"runtime", &Caller::runtime},
         {"rx_arping", &Caller::rx_arping},
-        {"rx_clearroi", &Caller::rx_clearroi},
+        //{"rx_clearroi", &Caller::rx_clearroi},
         {"rx_dbitlist", &Caller::rx_dbitlist},
         {"rx_dbitoffset", &Caller::rx_dbitoffset},
         {"rx_dbitreorder", &Caller::rx_dbitreorder},
@@ -598,7 +598,7 @@ class Caller {
         {"rx_padding", &Caller::rx_padding},
         {"rx_printconfig", &Caller::rx_printconfig},
         {"rx_realudpsocksize", &Caller::rx_realudpsocksize},
-        {"rx_roi", &Caller::rx_roi},
+        //{"rx_roi", &Caller::rx_roi},
         {"rx_silent", &Caller::rx_silent},
         {"rx_start", &Caller::rx_start},
         {"rx_status", &Caller::rx_status},
diff --git a/slsDetectorSoftware/src/CallerSpecial.cpp b/slsDetectorSoftware/src/CallerSpecial.cpp
index bdea93207..394a9d5e7 100644
--- a/slsDetectorSoftware/src/CallerSpecial.cpp
+++ b/slsDetectorSoftware/src/CallerSpecial.cpp
@@ -719,6 +719,7 @@ std::string Caller::rx_zmqip(int action) {
     }
     return os.str();
 }
+/* TODO
 std::string Caller::rx_roi(int action) {
     std::ostringstream os;
     if (action == defs::HELP_ACTION) {
@@ -761,7 +762,7 @@ std::string Caller::rx_roi(int action) {
         throw RuntimeError("Unknown action");
     }
     return os.str();
-}
+}*/
 std::string Caller::ratecorr(int action) {
     std::ostringstream os;
     if (action == defs::HELP_ACTION) {
diff --git a/slsDetectorSoftware/src/Detector.cpp b/slsDetectorSoftware/src/Detector.cpp
index f84e5fbb3..375faaeaa 100644
--- a/slsDetectorSoftware/src/Detector.cpp
+++ b/slsDetectorSoftware/src/Detector.cpp
@@ -1367,16 +1367,22 @@ void Detector::setRxArping(bool value, Positions pos) {
     pimpl->Parallel(&Module::setRxArping, pos, value);
 }
 
-Result<defs::ROI> Detector::getIndividualRxROIs(Positions pos) const {
-    return pimpl->Parallel(&Module::getRxROI, pos);
+std::vector<defs::ROI> Detector::getRxROI() const  {
+    return pimpl->getRxROI();
 }
 
-defs::ROI Detector::getRxROI() const { return pimpl->getRxROI(); }
-
-void Detector::setRxROI(const defs::ROI value) { pimpl->setRxROI(value); }
+// RxROIs can be set for all types except CTB. At multi level without gap pixels
+void Detector::setRxROI(const std::vector<defs::ROI>& args) {
+    pimpl->setRxROI(args);
+}
 
 void Detector::clearRxROI() { pimpl->clearRxROI(); }
 
+int Detector::getNumberOfUdpPortsInRxROI() const {
+    return pimpl->getNumberOfUdpPortsInRxROI();
+
+}
+
 // File
 
 Result<defs::fileFormat> Detector::getFileFormat(Positions pos) const {
diff --git a/slsDetectorSoftware/src/DetectorImpl.cpp b/slsDetectorSoftware/src/DetectorImpl.cpp
index 3e3efb8b5..07117715a 100644
--- a/slsDetectorSoftware/src/DetectorImpl.cpp
+++ b/slsDetectorSoftware/src/DetectorImpl.cpp
@@ -31,6 +31,7 @@
 
 namespace sls {
 
+
 DetectorImpl::DetectorImpl(int detector_index, bool verify, bool update)
     : detectorIndex(detector_index), shm(detector_index, -1),
       ctb_shm(detector_index, -1, CtbConfig::shm_tag()) {
@@ -130,10 +131,6 @@ void DetectorImpl::initializeDetectorStructure() {
     shm()->gapPixels = false;
     // zmqlib default
     shm()->zmqHwm = -1;
-    shm()->rx_roi.xmin = -1;
-    shm()->rx_roi.xmax = -1;
-    shm()->rx_roi.ymin = -1;
-    shm()->rx_roi.ymax = -1;
 }
 
 void DetectorImpl::initializeMembers(bool verify) {
@@ -539,7 +536,7 @@ void DetectorImpl::readFrameFromReceiver() {
     bool quadEnable = false;
     // to flip image
     bool eiger = false;
-    std::array<int, 4> rxRoi = shm()->rx_roi.getIntArray();
+    std::array<int, 4> rxRoi {};//TODO: get roi from json header 
 
     std::vector<bool> runningList(zmqSocket.size());
     std::vector<bool> connectList(zmqSocket.size());
@@ -1696,7 +1693,8 @@ void DetectorImpl::verifyUniqueHost(
     }
 }
 
-defs::ROI DetectorImpl::getRxROI() const {
+std::vector<defs::ROI> DetectorImpl::getRxROI() const {
+
     if (shm()->detType == CHIPTESTBOARD ||
         shm()->detType == defs::XILINX_CHIPTESTBOARD) {
         throw RuntimeError("RxRoi not implemented for this Detector");
@@ -1704,6 +1702,9 @@ defs::ROI DetectorImpl::getRxROI() const {
     if (modules.size() == 0) {
         throw RuntimeError("No Modules added");
     }
+
+    return std::vector<defs::ROI>{};
+    /*
     // complete detector in roi
     auto t = Parallel(&Module::getRxROI, {});
     if (t.equal() && t.front().completeRoi()) {
@@ -1770,9 +1771,56 @@ defs::ROI DetectorImpl::getRxROI() const {
         retval.ymax = 0;
     }
     return retval;
+    */
 }
 
-void DetectorImpl::setRxROI(const defs::ROI arg) {
+bool DetectorImpl::roisOverlap(const defs::ROI& a, const defs::ROI& b) {
+    return !(a.xmax < b.xmin || a.xmin > b.xmax ||
+         a.ymax < b.ymin || a.ymin > b.ymax);
+
+}
+
+void DetectorImpl::validateROIs(const std::vector<defs::ROI>& rois) {
+    for (size_t i = 0; i < rois.size(); ++i) {
+        const auto& roi = rois[i];
+
+        if (roi.noRoi()) {
+            throw RuntimeError("Invalid Roi of size 0. Roi: " + ToString(roi));
+        }
+        if (roi.completeRoi()) {
+            throw RuntimeError("Did you mean the clear roi command (API: "
+                            "clearRxROI, cmd: rx_clearroi) Roi: " + ToString(roi) + "?");
+        }
+        if (roi.xmin > roi.xmax || roi.ymin > roi.ymax) {
+            throw RuntimeError(
+                "Invalid Roi. xmin/ymin exceeds xmax/ymax. Roi: " + ToString(roi));
+        }
+
+        if (roi.xmin < 0 || roi.xmax >= shm()->numberOfChannels.x) {
+            throw RuntimeError("ROI x-dimension outside detector bounds. Roi: " + ToString(roi));
+        }
+
+        bool is2D = (modules[0]->getNumberOfChannels().y > 1 ? true : false);
+        if (is2D) {
+            if (roi.ymin < 0 || roi.ymax >= shm()->numberOfChannels.y) {
+                throw RuntimeError("ROI y-dimension outside detector bounds. Roi: " + ToString(roi));
+            }
+        } else {
+            if ((roi.ymin != -1 && roi.ymin != 0) || (roi.ymax != -1 && roi.ymax != 0)) {
+                throw RuntimeError("Invalid Y range for 1D detector: should be -1. Roi: " + ToString(roi));
+            }
+        }
+
+        for (size_t j = i + 1; j < rois.size(); ++j) {
+            if (roisOverlap(rois[i], rois[j])) {
+                clearRxROI();
+                throw RuntimeError("Overlapping ROIs detected — all cleared.");
+            }
+        }
+    }
+}
+
+void DetectorImpl::setRxROI(const std::vector<defs::ROI>& args) {
     if (shm()->detType == CHIPTESTBOARD ||
         shm()->detType == defs::XILINX_CHIPTESTBOARD) {
         throw RuntimeError("RxRoi not implemented for this Detector");
@@ -1780,32 +1828,14 @@ void DetectorImpl::setRxROI(const defs::ROI arg) {
     if (modules.size() == 0) {
         throw RuntimeError("No Modules added");
     }
-    if (arg.noRoi()) {
-        throw RuntimeError("Invalid Roi of size 0.");
-    }
-    if (arg.completeRoi()) {
-        throw RuntimeError("Did you mean the clear roi command (API: "
-                           "clearRxROI, cmd: rx_clearroi)?");
-    }
-    if (arg.xmin > arg.xmax || arg.ymin > arg.ymax) {
-        throw RuntimeError(
-            "Invalid Receiver Roi. xmin/ymin exceeds xmax/ymax.");
-    }
+    
+    validateROIs(args);
 
+/*
     defs::xy numChansPerMod = modules[0]->getNumberOfChannels();
     bool is2D = (numChansPerMod.y > 1 ? true : false);
     defs::xy geometry = getPortGeometry();
 
-    if (!is2D && ((arg.ymin != -1 && arg.ymin != 0) ||
-                  (arg.ymax != -1 && arg.ymax != 0))) {
-        throw RuntimeError(
-            "Invalid Receiver roi. Cannot set 2d roi for a 1d detector.");
-    }
-
-    if (arg.xmin < 0 || arg.xmax >= shm()->numberOfChannels.x ||
-        (is2D && (arg.ymin < 0 || arg.ymax >= shm()->numberOfChannels.y))) {
-        throw RuntimeError("Invalid Receiver Roi. Outside detector range.");
-    }
 
     for (size_t iModule = 0; iModule != modules.size(); ++iModule) {
         // default init = complete roi
@@ -1884,14 +1914,15 @@ void DetectorImpl::setRxROI(const defs::ROI arg) {
     } else {
         modules[0]->setRxROIMetadata(arg);
     }
+        */
 }
 
 void DetectorImpl::clearRxROI() {
-    Parallel(&Module::setRxROI, {}, defs::ROI{});
-    shm()->rx_roi.xmin = -1;
-    shm()->rx_roi.ymin = -1;
-    shm()->rx_roi.xmax = -1;
-    shm()->rx_roi.ymax = -1;
+    ;//Parallel(&Module::setRxROI, {}, defs::ROI{}); TODO: clear roi
+}
+
+int DetectorImpl::getNumberOfUdpPortsInRxROI() const {
+    return 0;// TODO
 }
 
 void DetectorImpl::getBadChannels(const std::string &fname,
diff --git a/slsDetectorSoftware/src/DetectorImpl.h b/slsDetectorSoftware/src/DetectorImpl.h
index da56e5a22..c899566f2 100644
--- a/slsDetectorSoftware/src/DetectorImpl.h
+++ b/slsDetectorSoftware/src/DetectorImpl.h
@@ -24,7 +24,7 @@ class detectorData;
 class Module;
 
 #define DETECTOR_SHMAPIVERSION 0x190809
-#define DETECTOR_SHMVERSION    0x220505
+#define DETECTOR_SHMVERSION    0x250616
 #define SHORT_STRING_LENGTH    50
 
 /**
@@ -65,8 +65,6 @@ struct sharedDetector {
     bool gapPixels;
     /** high water mark of listening tcp port (only data) */
     int zmqHwm;
-    /** in shm for gui purposes */
-    defs::ROI rx_roi{};
 };
 
 class DetectorImpl : public virtual slsDetectorDefs {
@@ -303,9 +301,10 @@ class DetectorImpl : public virtual slsDetectorDefs {
     std::vector<std::pair<std::string, uint16_t>>
     verifyUniqueRxHost(const std::vector<std::string> &names) const;
 
-    defs::ROI getRxROI() const;
-    void setRxROI(const defs::ROI arg);
+    std::vector<defs::ROI> getRxROI() const;
+    void setRxROI(const std::vector<defs::ROI>& args);
     void clearRxROI();
+    int getNumberOfUdpPortsInRxROI() const;
 
     void getBadChannels(const std::string &fname, Positions pos) const;
     void setBadChannels(const std::string &fname, Positions pos);
@@ -428,6 +427,9 @@ class DetectorImpl : public virtual slsDetectorDefs {
     void verifyUniqueHost(
         bool isDet, std::vector<std::pair<std::string, uint16_t>> &hosts) const;
 
+    bool roisOverlap(const defs::ROI& a, const defs::ROI& b);
+    void validateROIs(const std::vector<defs::ROI>& rois);
+
     const int detectorIndex{0};
     SharedMemory<sharedDetector> shm{0, -1};
     SharedMemory<CtbConfig> ctb_shm{0, -1, CtbConfig::shm_tag()};
diff --git a/slsDetectorSoftware/src/Module.cpp b/slsDetectorSoftware/src/Module.cpp
index d1356c30f..47f4ffe79 100644
--- a/slsDetectorSoftware/src/Module.cpp
+++ b/slsDetectorSoftware/src/Module.cpp
@@ -1520,7 +1520,7 @@ bool Module::getRxArping() const {
 void Module::setRxArping(bool enable) {
     sendToReceiver(F_SET_RECEIVER_ARPING, static_cast<int>(enable), nullptr);
 }
-
+/*
 defs::ROI Module::getRxROI() const {
     return sendToReceiver<slsDetectorDefs::ROI>(F_RECEIVER_GET_RECEIVER_ROI);
 }
@@ -1533,7 +1533,7 @@ void Module::setRxROI(const slsDetectorDefs::ROI arg) {
 void Module::setRxROIMetadata(const slsDetectorDefs::ROI arg) {
     sendToReceiver(F_RECEIVER_SET_RECEIVER_ROI_METADATA, arg, nullptr);
 }
-
+*/
 // File
 slsDetectorDefs::fileFormat Module::getFileFormat() const {
     return sendToReceiver<fileFormat>(F_GET_RECEIVER_FILE_FORMAT);
diff --git a/slsDetectorSoftware/src/Module.h b/slsDetectorSoftware/src/Module.h
index 86c9e3d5f..a687be6c3 100644
--- a/slsDetectorSoftware/src/Module.h
+++ b/slsDetectorSoftware/src/Module.h
@@ -301,9 +301,9 @@ class Module : public virtual slsDetectorDefs {
     std::array<pid_t, NUM_RX_THREAD_IDS> getReceiverThreadIds() const;
     bool getRxArping() const;
     void setRxArping(bool enable);
-    defs::ROI getRxROI() const;
-    void setRxROI(const slsDetectorDefs::ROI arg);
-    void setRxROIMetadata(const slsDetectorDefs::ROI arg);
+    //defs::ROI getRxROI() const;
+    //void setRxROI(const slsDetectorDefs::ROI arg);
+    //void setRxROIMetadata(const slsDetectorDefs::ROI arg);
 
     /**************************************************
      *                                                *
diff --git a/slsDetectorSoftware/tests/CMakeLists.txt b/slsDetectorSoftware/tests/CMakeLists.txt
index d87f17ed0..f70e393f2 100755
--- a/slsDetectorSoftware/tests/CMakeLists.txt
+++ b/slsDetectorSoftware/tests/CMakeLists.txt
@@ -5,6 +5,7 @@
 target_sources(tests PRIVATE 
     ${CMAKE_CURRENT_SOURCE_DIR}/test-SharedMemory.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/test-slsDetector.cpp
+    ${CMAKE_CURRENT_SOURCE_DIR}/test-Roi.cpp
 
     ${CMAKE_CURRENT_SOURCE_DIR}/Caller/test-Caller.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/Caller/test-Caller-rx.cpp
diff --git a/slsDetectorSoftware/tests/test-Roi.cpp b/slsDetectorSoftware/tests/test-Roi.cpp
new file mode 100644
index 000000000..9ce6c3b30
--- /dev/null
+++ b/slsDetectorSoftware/tests/test-Roi.cpp
@@ -0,0 +1,84 @@
+#include "catch.hpp"
+#include <string>
+
+#include <stdlib.h>
+
+#include "DetectorImpl.h"
+#include "sls/Detector.h"
+#include "Module.h"
+
+#include <fstream>
+
+namespace sls {
+
+TEST_CASE("ROI validation") {
+    DetectorImpl det(0, false, false);
+    det.addTestModule(slsDetectorDefs::JUNGFRAU);
+    std::cout << "size:"<< det.size() << std::endl;
+    DetectorImpl detector(0, false, false);
+
+    SECTION("Valid non-overlapping ROIs") {
+        std::vector<slsDetectorDefs::ROI> rois = {
+            {0, 10, 0, 10},
+            {20, 30, 0, 10},
+            {0, 10, 20, 30},
+            {40, 50, 0, 10}
+        };
+        REQUIRE_NOTHROW(DetectorImplTestHelper::testValidateRois(detector, rois));
+    }
+
+    SECTION("Overlapping ROIs should throw") {
+        std::vector<slsDetectorDefs::ROI> rois = {
+            {0, 10, 0, 10},
+            {5, 15, 0, 10} 
+        };
+        REQUIRE_THROWS_AS(DetectorImplTestHelper::testValidateRois(detector, rois),
+                          sls::RuntimeError);
+    }
+
+    SECTION("Invalid ROI (xmin > xmax)") {
+        std::vector<slsDetectorDefs::ROI> rois = {
+            {12, 8, 0, 10}
+        };
+        REQUIRE_THROWS_AS(DetectorImplTestHelper::testValidateRois(detector, rois),
+                          sls::RuntimeError);
+    }
+
+    SECTION("Invalid ROI (ymin > ymax)") {
+        std::vector<slsDetectorDefs::ROI> rois = {
+            {0, 10, 20, 5}
+        };
+        REQUIRE_THROWS_AS(DetectorImplTestHelper::testValidateRois(detector, rois),
+                          sls::RuntimeError);
+    }
+
+    SECTION("Invalid ROI (outside detector bounds)") {
+        // Assuming detector has 100x100 dimensions
+        detector.setNumberOfChannels({100, 100});
+        std::vector<slsDetectorDefs::ROI> rois = {
+            {95, 105, 0, 10} // xmax out of bounds
+        };
+        REQUIRE_THROWS_AS(DetectorImplTestHelper::testValidateRois(detector, rois),
+                          sls::RuntimeError);
+    }
+
+    SECTION("Valid ROI for 1D detector") {
+        detector.setNumberOfChannels({100, 1});
+        std::vector<slsDetectorDefs::ROI> rois = {
+            {10, 20, -1, -1}
+        };
+        REQUIRE_NOTHROW(DetectorImplTestHelper::testValidateRois(detector, rois));
+    }
+
+    SECTION("Invalid Y for 1D detector") {
+        detector.setNumberOfChannels({100, 1});
+        std::vector<slsDetectorDefs::ROI> rois = {
+            {10, 20, 0, 10} // Y should be -1 for 1D
+        };
+        REQUIRE_THROWS_AS(DetectorImplTestHelper::testValidateRois(detector, rois),
+                          sls::RuntimeError);
+    }
+}
+
+
+} // namespace sls