Replace 'pla palatal' with 'alp'.

phsource/ph_albanian

 
 
 phoneme dZ;
-  vcd pla afr sib palatal
+  vcd alp sib afr
   voicingswitch tS;
   ipa dʑ
   lengthmod 5

phsource/ph_croatian

 
 
 phoneme dZ;    // letter đ
-  vcd pla afr sib palatal
+  vcd alp sib afr
   lengthmod 5
   ipa dʑ
   voicingswitch tS;

phsource/ph_japanese

 endphoneme
 
 phoneme d_z\\
-  vcd pla afr sib palatal
+  vcd alp sib afr
   voicingswitch t_s\\
   ipa dʑ
   lengthmod 5

phsource/ph_korean

 endphoneme
 
 phoneme tS; //  voiceless /ㅈ/
-  vls pla afr sib palatal
+  vls alp sib afr
   ipa tɕ
   lengthmod 2
   Vowelin f1=0  f2=2700 400 600  f3=300 80
 endphoneme
 
 phoneme dZ; //  voiced /ㅈ/
-  vcd pla afr sib palatal
+  vcd alp sib afr
   ipa dʑ
   lengthmod 2
   Vowelin f1=0  f2=2700 400 600  f3=300 80

phsource/ph_serbian

 
 
 phoneme dZ;
-  vcd pla afr sib palatal
+  vcd alp sib afr
   lengthmod 5
   ipa dʑ
   voicingswitch tS;

phsource/phonemes

 
 
 phoneme dZ;
-  vcd pla afr sib palatal
+  vcd alp sib afr
   voicingswitch tS;
   ipa dʑ
   lengthmod 5

src/libespeak-ng/phoneme.c

 	case bld:
 		// FIXME: Not supported by eSpeak. Used in German p͡f.
 		break;
-	case alp:
-		// FIXME: Not supported by eSpeak. Used in Chinese/Japanese ɕ and ʑ.
+	case alp: // pla pzd
+		phoneme->phflags &= ~phARTICULATION;
+		phoneme->phflags |= 6 << 16;
+		phoneme->phflags |= phPALATAL;
 		break;
 	// voice
 	case vcd: