diff --git a/lib_com/ivas_prot.h b/lib_com/ivas_prot.h
index 14226ddbd9312bd78fe968c54ae3275f3ddb29cf..79e774793e74509666cb1babac428ff62e88305a 100755
--- a/lib_com/ivas_prot.h
+++ b/lib_com/ivas_prot.h
@@ -5652,6 +5652,10 @@ void ivas_osba_enc(
     const ISM_MODE ism_mode,                                    /* i  : ISM mode                                  */
     const int16_t sba_analysis_order,                           /* i  : SBA order evaluated in DirAC/SPAR encoder */
     const int32_t input_Fs                                      /* i  : input sampling rate                       */
+#ifdef FIX_732_PLANAR_SBA_OSBA
+    ,
+    const int16_t sba_planar /* i : planar SBA flag*/
+#endif
 );
 
 ivas_error ivas_masa_ism_data_open(
diff --git a/lib_com/options.h b/lib_com/options.h
index 1bdad531d639fbc89d54db5ff3afb331b2816589..1d13c60dd4077a68f5db18c565171bdd3c0ce2f7 100644
--- a/lib_com/options.h
+++ b/lib_com/options.h
@@ -158,6 +158,8 @@
 #define OSBA_SPLIT_RENDERING
 #endif
 
+#define FIX_732_PLANAR_SBA_OSBA                         /* Dlb : issue 732: fix for crash in planar mode in OSBA format*/
+
 #define FIX_708_DPID_COMMAND_LINE                       /* issue 708: sanity checks for '-dpid' command-line */
 #define FIX_730_DPID_NOT_SET_CORRECTLY                  /* Eri: issue 730: write dpid read from file in correct index, print informative error message when DPID specified is not found. */
 
diff --git a/lib_enc/ivas_enc.c b/lib_enc/ivas_enc.c
index 7e0d245b4a640f54cfadbcafcd8ddd2f322abd1b..85426f310dee102fdbe62cb66ad228b79170047b 100644
--- a/lib_enc/ivas_enc.c
+++ b/lib_enc/ivas_enc.c
@@ -386,15 +386,28 @@ ivas_error ivas_enc(
     }
     else if ( ivas_format == SBA_ISM_FORMAT )
     {
+#ifdef FIX_732_PLANAR_SBA_OSBA
+        int16_t planar_sba_orig;
+        planar_sba_orig = hEncoderConfig->sba_planar;
+#endif
 #ifndef NONBE_CR_FIX_735_SBA_HP20_BRATE_SWITCHING
         ivas_osba_enc_reconfig( st_ivas );
 #endif
         /* Analyze objects and determine needed audio signals */
         ivas_osba_enc( st_ivas->hOSba, st_ivas->hIsmMetaData, data_f, input_frame, hEncoderConfig->nchan_ism, st_ivas->ism_mode, st_ivas->sba_analysis_order,
-                       hEncoderConfig->input_Fs );
+                       hEncoderConfig->input_Fs
+#ifdef FIX_732_PLANAR_SBA_OSBA
+                       ,
+                       hEncoderConfig->sba_planar
+#endif
+        );
 
         if ( st_ivas->ism_mode == ISM_MODE_NONE )
         {
+#ifdef FIX_732_PLANAR_SBA_OSBA
+            /*once SBA and ISM are combined into SBA signal then disable planar flag*/
+            hEncoderConfig->sba_planar = 0;
+#endif
             if ( st_ivas->nchan_transport == 1 )
             {
                 st = st_ivas->hSCE[st_ivas->nSCE - 1]->hCoreCoder[0];
@@ -451,6 +464,9 @@ ivas_error ivas_enc(
                     return error;
                 }
             }
+#ifdef FIX_732_PLANAR_SBA_OSBA
+            hEncoderConfig->sba_planar = planar_sba_orig;
+#endif
         }
         else
         {
diff --git a/lib_enc/ivas_osba_enc.c b/lib_enc/ivas_osba_enc.c
index 4558f337ec58909cf18c64e2a9d84bc88e849850..6c7553ffffeecfc2a754832888373979e0df61b2 100644
--- a/lib_enc/ivas_osba_enc.c
+++ b/lib_enc/ivas_osba_enc.c
@@ -390,6 +390,10 @@ void ivas_osba_enc(
     const ISM_MODE ism_mode,          /* i  : ISM mode                                    */
     const int16_t sba_analysis_order, /* i  : SBA order evaluated in DirAC/SPAR encoder */
     const int32_t input_Fs            /* i  : input sampling rate*/
+#ifdef FIX_732_PLANAR_SBA_OSBA
+    ,
+    const int16_t sba_planar /* i : planar SBA flag*/
+#endif
 )
 {
     float data_out_f[MAX_INPUT_CHANNELS][L_FRAME48k];
@@ -407,6 +411,13 @@ void ivas_osba_enc(
         /* Convert ISM to SBA */
         ivas_osba_render_ism_to_sba( data_in_f, data_out_f, input_frame, sba_analysis_order, nchan_ism, hIsmMeta, hOSba->prev_object_dm_gains, hOSba->interpolator );
 
+#ifdef FIX_732_PLANAR_SBA_OSBA
+        if ( sba_planar )
+        {
+            ivas_sba_zero_vert_comp( &( data_in_f[nchan_ism] ), sba_analysis_order, sba_planar, input_frame );
+        }
+#endif
+
         /* Merge SBA signals */
         ivas_merge_sba_transports( data_out_f, &( data_in_f[nchan_ism] ), data_in_f, input_frame, sba_analysis_order );
     }
diff --git a/lib_enc/lib_enc.c b/lib_enc/lib_enc.c
index c1c8b047e8f20eadca1eae31aa9de92cb69f1810..ee9e172dd920142b8cb20af909afd86e8642d260 100644
--- a/lib_enc/lib_enc.c
+++ b/lib_enc/lib_enc.c
@@ -574,7 +574,12 @@ ivas_error IVAS_ENC_ConfigureForSBAObjects(
     st_ivas->hEncoderConfig->sba_order = order;
 
     /* Input in ACN/SN3D in all cases (3D and planar): get number of channels */
+#ifdef FIX_732_PLANAR_SBA_OSBA
+    /*Input file will always contain all channels for a given order irrespective of planar flag*/
+    st_ivas->hEncoderConfig->nchan_inp = ivas_sba_get_nchan( st_ivas->hEncoderConfig->sba_order, 0 ) + numObjects;
+#else
     st_ivas->hEncoderConfig->nchan_inp = ivas_sba_get_nchan( st_ivas->hEncoderConfig->sba_order, isPlanar ) + numObjects;
+#endif
 
     st_ivas->hEncoderConfig->Opt_PCA_ON = (int16_t) Opt_PCA_ON;