diff --git a/api/s23_options.py b/api/s23_options.py
index aca00a4..f1a372c 100644
--- a/api/s23_options.py
+++ b/api/s23_options.py
@@ -49,11 +49,32 @@ def inp_in_option(section: list[str]) -> str:
 def inp_out_option(name: str) -> list[str]:
     lines = []
     objs = read_all(name, f"select * from options")
+
+    is_dda = False
+
+    for obj in objs:
+        if obj['key'] == 'DEMAND MODEL':
+            is_dda = obj['value'] == 'DDA'
+
+    dda_ignore = [
+        'HEADERROR',    # TODO: default is 0 which is conflict with PDA
+        'FLOWCHANGE',   # TODO: default is 0 which is conflict with PDA
+        'MINIMUM PRESSURE',
+        'REQUIRED PRESSURE',
+        'PRESSURE EXPONENT'
+    ]
+
     for obj in objs:
         key = obj['key']
+        # why write this ?
+        if key == 'PRESSURE':
+            continue
         # release version does not support new keys and has error message
         if key == 'HTOL' or key == 'QTOL' or key == 'RQTOL':
             continue
+        # ignore some weird settings for DDA
+        if is_dda and key in dda_ignore:
+            continue
         value = obj['value']
         if str(value).strip() != '':
             lines.append(f'{key} {value}')