diff --git a/apps/renderer.c b/apps/renderer.c
index 26c4b349d2b8e436a01db2d5d3dda8a9f86f0d31..18e0f838e31ad927b92664cb4c99f72c6890f56b 100644
--- a/apps/renderer.c
+++ b/apps/renderer.c
@@ -1228,6 +1228,9 @@ int main(
     {
         masaIds[i] = 0u;
     }
+#ifdef NONBE_1377_REND_DIRATT_CONF
+    IVAS_REND_SetObjectIDs( hIvasRend );
+#endif
 
     for ( i = 0; i < args.inConfig.numMultiChannelBuses; ++i )
     {
diff --git a/lib_rend/ivas_objectRenderer.c b/lib_rend/ivas_objectRenderer.c
index 6e836e141c2ad7cb2a44c8318899b353925e1cc7..f0fb90fe4e1df019fd8337662615bd92f3424093 100644
--- a/lib_rend/ivas_objectRenderer.c
+++ b/lib_rend/ivas_objectRenderer.c
@@ -680,8 +680,8 @@ ivas_error ivas_td_binaural_open_ext(
     RENDER_CONFIG_DATA *hRendCfg, /* i  : Renderer configuration */
     LSSETUP_CUSTOM_STRUCT *customLsInput,
 #ifdef NONBE_1377_REND_DIRATT_CONF
-    const int32_t outFs,       /* i: output sampling rate */
-    const IVAS_REND_InputId id /* i: ISM ID */
+    const int32_t outFs,    /* i: output sampling rate */
+    const int16_t object_id /* i: Object ID */
 )
 #else
     const int32_t outFs )
@@ -692,9 +692,6 @@ ivas_error ivas_td_binaural_open_ext(
     IVAS_FORMAT ivas_format;
     IVAS_OUTPUT_SETUP hTransSetup;
     ivas_error error;
-#ifdef NONBE_1377_REND_DIRATT_CONF
-    int16_t ism_number;
-#endif
 
     float *distAtt = NULL;
     float *directivity = NULL;
@@ -726,8 +723,7 @@ ivas_error ivas_td_binaural_open_ext(
     if ( NULL != hRendCfg )
     {
 #ifdef NONBE_1377_REND_DIRATT_CONF
-        ism_number = id & 0x00FF; /* Exctract ISM number from ID */
-        directivity = hRendCfg->directivity + 3 * ism_number;
+        directivity = hRendCfg->directivity + 3 * object_id;
 #else
         directivity = hRendCfg->directivity;
 #endif
diff --git a/lib_rend/ivas_prot_rend.h b/lib_rend/ivas_prot_rend.h
index 2617bae683233d35cf5ae7b5be9f0d259f6c4170..32c2992c1a2449e6e329d666e821248b1e5bd426 100644
--- a/lib_rend/ivas_prot_rend.h
+++ b/lib_rend/ivas_prot_rend.h
@@ -662,8 +662,8 @@ ivas_error ivas_td_binaural_open_ext(
     RENDER_CONFIG_DATA *hRendCfg,                               /* i  : Renderer configuration                  */
     LSSETUP_CUSTOM_STRUCT *customLsInput,
 #ifdef NONBE_1377_REND_DIRATT_CONF
-    const int32_t outFs,                                        /* i: output sampling rate                      */
-    const IVAS_REND_InputId id                                  /* i: ISM ID                                    */
+    const int32_t output_Fs,                                    /* i: output sampling rate                      */
+    const int16_t object_id                                     /* i: Object ID                                 */
 #else
     const int32_t output_Fs 
 #endif
diff --git a/lib_rend/lib_rend.c b/lib_rend/lib_rend.c
index 4d12d71e39138e721281b15aea5b87c3f4385d03..645a23f2c827b7e056035e4c64ae2bbc21251eda 100644
--- a/lib_rend/lib_rend.c
+++ b/lib_rend/lib_rend.c
@@ -122,6 +122,9 @@ typedef struct
     float nonDiegeticPanGain;
     OMASA_ANA_HANDLE hOMasa;
     uint16_t total_num_objects;
+#ifdef NONBE_1377_REND_DIRATT_CONF
+    int16_t object_id;
+#endif
     float ism_metadata_delay_ms;
 } input_ism;
 
@@ -1609,7 +1612,7 @@ static ivas_error setRendInputActiveIsm(
     if ( outConfig == IVAS_AUDIO_CONFIG_BINAURAL || outConfig == IVAS_AUDIO_CONFIG_BINAURAL_SPLIT_CODED || outConfig == IVAS_AUDIO_CONFIG_BINAURAL_SPLIT_PCM )
     {
 #ifdef NONBE_1377_REND_DIRATT_CONF
-        if ( ( error = ivas_td_binaural_open_ext( &inputIsm->tdRendWrapper, inConfig, hRendCfg, NULL, *rendCtx.pOutSampleRate, id ) ) != IVAS_ERR_OK )
+        if ( ( error = ivas_td_binaural_open_ext( &inputIsm->tdRendWrapper, inConfig, hRendCfg, NULL, *rendCtx.pOutSampleRate, inputIsm->object_id ) ) != IVAS_ERR_OK )
 #else
         if ( ( error = ivas_td_binaural_open_ext( &inputIsm->tdRendWrapper, inConfig, hRendCfg, NULL, *rendCtx.pOutSampleRate ) ) != IVAS_ERR_OK )
 #endif
@@ -1621,7 +1624,7 @@ static ivas_error setRendInputActiveIsm(
         for ( i = 0; i < MAX_HEAD_ROT_POSES - 1; ++i )
         {
 #ifdef NONBE_1377_REND_DIRATT_CONF
-            if ( ( error = ivas_td_binaural_open_ext( &inputIsm->splitTdRendWrappers[i], inConfig, hRendCfg, NULL, *inputIsm->base.ctx.pOutSampleRate, id ) ) != IVAS_ERR_OK )
+            if ( ( error = ivas_td_binaural_open_ext( &inputIsm->splitTdRendWrappers[i], inConfig, hRendCfg, NULL, *inputIsm->base.ctx.pOutSampleRate, inputIsm->object_id ) ) != IVAS_ERR_OK )
 #else
             if ( ( error = ivas_td_binaural_open_ext( &inputIsm->splitTdRendWrappers[i], inConfig, hRendCfg, NULL, *inputIsm->base.ctx.pOutSampleRate ) ) != IVAS_ERR_OK )
 #endif
@@ -1643,7 +1646,7 @@ static ivas_error setRendInputActiveIsm(
     else
     {
 #ifdef NONBE_1377_REND_DIRATT_CONF
-        if ( ( error = ivas_td_binaural_open_ext( &inputIsm->tdRendWrapper, inConfig, hRendCfg, NULL, *rendCtx.pOutSampleRate, id ) ) != IVAS_ERR_OK )
+        if ( ( error = ivas_td_binaural_open_ext( &inputIsm->tdRendWrapper, inConfig, hRendCfg, NULL, *rendCtx.pOutSampleRate, inputIsm->object_id ) ) != IVAS_ERR_OK )
 #else
         if ( ( error = ivas_td_binaural_open_ext( &inputIsm->tdRendWrapper, inConfig, hRendCfg, NULL, *rendCtx.pOutSampleRate ) ) != IVAS_ERR_OK )
 #endif
@@ -3959,6 +3962,34 @@ ivas_error IVAS_REND_ConfigureCustomInputLoudspeakerLayout(
     return IVAS_ERR_OK;
 }
 
+#ifdef NONBE_1377_REND_DIRATT_CONF
+/*-------------------------------------------------------------------*
+ * IVAS_REND_SetObjectIDs()
+ *
+ *
+ *-------------------------------------------------------------------*/
+
+ivas_error IVAS_REND_SetObjectIDs(
+    IVAS_REND_HANDLE hIvasRend /* i/o: Renderer handle            */
+)
+{
+    int16_t i;
+
+    /* Validate function arguments */
+    if ( hIvasRend == NULL )
+    {
+        return IVAS_ERR_UNEXPECTED_NULL_POINTER;
+    }
+
+    for ( i = 0; i < RENDERER_MAX_ISM_INPUTS; i++ )
+    {
+        hIvasRend->inputsIsm[i].object_id = i;
+    }
+
+    return IVAS_ERR_OK;
+}
+#endif
+
 
 /*-------------------------------------------------------------------*
  * IVAS_REND_SetInputGain()
diff --git a/lib_rend/lib_rend.h b/lib_rend/lib_rend.h
index ac9516521d0486dcc9224b2f3f6af10e918b81fa..4df7d859612ba86491b5b41a8565a8aba08eba3c 100644
--- a/lib_rend/lib_rend.h
+++ b/lib_rend/lib_rend.h
@@ -152,6 +152,12 @@ ivas_error IVAS_REND_ConfigureCustomInputLoudspeakerLayout(
     const IVAS_CUSTOM_LS_DATA layout                /* i  : custom loudspeaker layout for input                 */
 );
 
+#ifdef NONBE_1377_REND_DIRATT_CONF
+ivas_error IVAS_REND_SetObjectIDs(
+    IVAS_REND_HANDLE hIvasRend                      /* i/o: Renderer handle                                     */
+);
+#endif
+
 ivas_error IVAS_REND_SetInputGain(
     IVAS_REND_HANDLE hIvasRend,                     /* i/o: Renderer handle                                     */
     const IVAS_REND_InputId inputId,                /* i  : ID of the input                                     */