diff --git a/data_analysis/02-3_oracle_workflow_test.py b/data_analysis/02-3_oracle_workflow_test.py
index 82eec9c..cb1b48f 100644
--- a/data_analysis/02-3_oracle_workflow_test.py
+++ b/data_analysis/02-3_oracle_workflow_test.py
@@ -1,6 +1,7 @@
 # %%
 import json
 import time
+import typing
 from collections.abc import Sequence
 from pathlib import Path
 from pprint import pprint
@@ -14,8 +15,9 @@ from umbreit import db, types
 
 # %%
 # import importlib
-# db = importlib.reload(db)
 # types = importlib.reload(types)
+# db = importlib.reload(db)
+
 
 # %%
 p_cfg = io.search_file_iterative(
@@ -80,6 +82,8 @@ start_date = (current_dt - td).date()
 print("Starting date: ", start_date)
 
 # %%
+# // ---------- LIVE DATA -----------
+
 # TODO find way to filter more efficiently
 # WF-200: filter for relevant orders with current BEDP set
 # missing: order types which are relevant
@@ -168,11 +172,14 @@ print(stmt.compile(engine))
 # raw data query
 # TODO look for entries which do not have an associated title number
 
-print("--------------- ext_bedpbed --------------")
+print("--------------- raw data query --------------")
 t1 = time.perf_counter()
+# join_condition = sql.and_(
+#     db.ext_bedpbed.c.BEDP_TITELNR == db.ext_titel_info.c.TI_NUMMER,
+#     db.ext_bedpbed.c.BEDP_MAN == db.ext_titel_info.c.MANDFUEHR,
+# )
 join_condition = sql.and_(
     db.ext_bedpbed.c.BEDP_TITELNR == db.ext_titel_info.c.TI_NUMMER,
-    db.ext_bedpbed.c.BEDP_MAN == db.ext_titel_info.c.MANDFUEHR,
 )
 stmt = sql.select(
     db.ext_bedpbed.c.BEDARFNR,
@@ -199,36 +206,24 @@ elapsed = t2 - t1
 print(f"Query duration: {elapsed:.4f} sec")
 print("Number of entries: ", len(df))
 print(f"Estimated size in memory: {df.estimated_size(unit='mb')} MB")
+
+
 # %%
+# // NO LIVE DATA NEEDED
 # SAVING/LOADING
-p_save = Path.cwd() / "raw_data_from_sql_query_20251202-2.arrow"
+p_save = Path.cwd() / "raw_data_from_sql_query_20251203-2.arrow"
 # df.write_ipc(p_save)
 df = pl.read_ipc(p_save)
 # %%
-len(df)
+print(len(df))
 df.head()
 # 4591588: in title database with different MANDANT (are MANDANTFUEHR and BEDP_MAN feasible for matching?)
 # %%
-df.filter(pl.col("BEDP_MAN").is_in((1, 90))).filter(pl.col("MELDENUMMER"))
-# %%
-# !! CHECK: null values set in the query with CASE statement
-print(len(df.filter(pl.col("MELDENUMMER") == 18)))
-# df.filter(pl.col("MELDENUMMER") == 18).filter((pl.col("BEDP_MENGE_BEDARF_VM").is_not_null()) & (pl.col("BEDP_MENGE_BEDARF_VM") > 0))
-df.filter(pl.col("BEDP_MENGE_BEDARF_VM") > pl.col("MENGE_VORMERKER"))
-# %%
-# !! CHECK: titles with request where no title information is found
-# not_in_title_table = df.filter(pl.col("BEDP_MAN").is_in((1, 90))).filter(
-#     pl.col("MELDENUMMER").is_null()
-# )
-# EXPORT_FEAT = "BEDP_TITELNR"
-# to_save = {EXPORT_FEAT: not_in_title_table.select(EXPORT_FEAT).to_series().to_list()}
-# p_save_not_in_title_table = Path.cwd() / "not_in_title_table.json"
-
-# with open(p_save_not_in_title_table, "w") as file:
-#     json.dump(to_save, file, indent=4)
-# %%
-# !! CHECK: different MANDANTEN
+# ** CHECK: different MANDANTEN
 # check for valid entries for unknown MANDANTEN
+# MANDANTEN others than (1, 90) do not possess relevant properties such as
+# "MELDENUMMER" and others --> conclusion: not relevant
+
 # MANDANT = 80
 
 # print(f"Mandant: {MANDANT}")
@@ -243,6 +238,58 @@ df.filter(pl.col("BEDP_MENGE_BEDARF_VM") > pl.col("MENGE_VORMERKER"))
 #     ).null_count()
 # )
 # print("Unique value counts: ", df.select(pl.col("BEDP_MAN").value_counts()))
+
+# %%
+# ** PREFILTER
+# always needed, entries filtered out are to be disposed
+df = df.filter(pl.col("BEDP_MAN").is_in((1, 90))).filter(pl.col("MELDENUMMER") != 26)
+# %%
+len(df)
+# %%
+# ** CHECK: null values set in the query with CASE statement
+# not known if NULL because of CASE statement or already set in table
+# unknown consequences: Are they relevant? How does it relate to "MENGE_VORMERKER"?
+# from the title DB
+df.filter(pl.col("BEDP_MENGE_BEDARF_VM").is_null())
+df.filter(pl.col("BEDP_MENGE_BEDARF_VM") == 0)
+# %%
+df.select("MELDENUMMER").unique()
+# %%
+# ** CHECK: null values for "MENGE_VORMERKER"
+df.filter(pl.col("MENGE_VORMERKER").is_null())
+# df.filter(pl.col("BEDP_MENGE_BEDARF_VM") == 0)
+
+agg_t = (
+    df.group_by(["MELDENUMMER"]).agg(
+        # pl.count("MENGE_VORMERKER").alias("pos_count").n_unique(),
+        pl.col("MENGE_VORMERKER").alias("VM_count").unique(),
+    )
+    # .filter(pl.col("count_customer") >= 0)  # !! should be 3
+)  # .filter(pl.col("MELDENUMMER") == 18)
+agg_t
+
+df.filter(pl.col("MELDENUMMER") == 18).select(pl.col("MENGE_VORMERKER").is_null().sum())
+
+# %%
+# ** CHECK: relationship between "BEDP_MENGE_BEDARF_VM" and "MENGE_VORMERKER"
+# ** not known at this point
+# there are entries where BEDP_MENGE_BEDARF_VM > MENGE_VORMERKER -->
+# BEDP_MENGE_BEDARF_VM as reference or ground truth not suitable
+df.filter(pl.col("BEDP_MENGE_BEDARF_VM") > pl.col("MENGE_VORMERKER"))
+# why are there entries where "BEDP_MENGE_BEDARF_VM" > "MENGE_VORMERKER"?
+# %%
+# ** CHECK: titles with request where no title information is found
+# result: there were entries found on 02.12., but not on 03.12.2025
+not_in_title_table = df.filter(pl.col("MELDENUMMER").is_null())
+EXPORT_FEAT = "BEDP_TITELNR"
+to_save = {EXPORT_FEAT: not_in_title_table.select(EXPORT_FEAT).to_series().to_list()}
+p_save_not_in_title_table = Path.cwd() / "not_in_title_table_20251203-1.json"
+to_save
+# with open(p_save_not_in_title_table, "w") as file:
+#     json.dump(to_save, file, indent=4)
+# %%
+print(len(df.filter(pl.col("MELDENUMMER") == 18)))
+# df.filter(pl.col("MELDENUMMER") == 18).filter((pl.col("BEDP_MENGE_BEDARF_VM").is_not_null()) & (pl.col("BEDP_MENGE_BEDARF_VM") > 0))
 # %%
 # VM_CRITERION = "MENGE_VORMERKER"
 VM_CRITERION = "BEDP_MENGE_BEDARF_VM"
@@ -273,16 +320,40 @@ def get_raw_data() -> pl.DataFrame:
     )
 
 
-def get_empyt_result_df() -> pl.DataFrame:
+def get_empyt_pipeline_result(
+    data: pl.DataFrame,
+) -> types.PipelineResult:
     schema = db.results_schema_map.copy()
     del schema["id"]
-    return pl.DataFrame(schema=schema)
+    results = pl.DataFrame(schema=schema)
+    return types.PipelineResult(results=results, open=data)
 
 
-def apply_several_filters(
+def prepare_base_data(
+    df: pl.DataFrame,
+) -> pl.DataFrame:
+    """pre-routine to handle non-feasible entries
+
+    Parameters
+    ----------
+    df : pl.DataFrame
+        raw data collected from database query
+
+    Returns
+    -------
+    pl.DataFrame
+        pre-processed data
+    """
+    df = df.with_columns(pl.col("MENGE_VORMERKER").fill_null(0))
+    df = df.with_columns(pl.col("BEDP_MENGE_BEDARF_VM").fill_null(0))
+
+    return df
+
+
+def _apply_several_filters(
     df: pl.DataFrame,
     filters: Sequence[pl.Expr],
-) -> tuple[pl.DataFrame, pl.DataFrame]:
+) -> types.FilterResult:
     df_current = df
     removed_rows: list[pl.DataFrame] = []
 
@@ -294,53 +365,39 @@ def apply_several_filters(
 
     df_removed = pl.concat(removed_rows)
 
-    return df_current, df_removed
-
-
-def prepare_base_data(df: pl.DataFrame) -> pl.DataFrame:
-    df = df.with_columns(pl.col("MENGE_VORMERKER").fill_null(0))
-    df = df.with_columns(pl.col("BEDP_MENGE_BEDARF_VM").fill_null(0))
-
-    return df
-
-
-def workflow_100_umbreit(
-    results: pl.DataFrame,
-    data: pl.DataFrame,
-    vm_criterion: str,
-) -> tuple[pl.DataFrame, pl.DataFrame]:
-    filter_meldenummer = pl.col("MELDENUMMER") == 18
-    filter_mandant = pl.col("BEDP_MAN") == 1
-    filter_number_vm = pl.col(vm_criterion) > 0
-
-    relevant, filt = apply_several_filters(
-        data, (filter_meldenummer, filter_mandant, filter_number_vm)
-    )
-    results = _results_workflow_100(
-        results,
-        relevant,
-        vorlage=True,
-        wf_id=100,
-        freigabe_auto=types.Freigabe.WF_100,
-    )
-
-    return results, filt
+    return types.FilterResult(in_=df_current, out_=df_removed)
 
 
 # post-processing the results
-def _results_workflow_100(
-    results: pl.DataFrame,
+# TODO: order quantity not always necessary
+# TODO: change relevant criterion for order quantity
+def _write_results(
+    results_table: pl.DataFrame,
     data: pl.DataFrame,
     vorlage: bool,
     wf_id: int,
     freigabe_auto: types.Freigabe,
+    is_out: bool,
 ) -> pl.DataFrame:
+    ORDER_QTY_CRIT: typing.Final[str] = "BEDP_MENGE_BEDARF_VM"
+
     data = data.rename(db.map_to_result)
+    order_qty_expr: pl.Expr
+    if is_out:
+        order_qty_expr = (
+            pl.lit(0)
+            .alias("ORDER_QTY_CRIT")
+            .alias("best_menge")
+            .cast(db.results_schema_map["best_menge"])
+        )
+    else:
+        order_qty_expr = pl.col(ORDER_QTY_CRIT).alias("best_menge")
+
     data = data.with_columns(
         [
             pl.lit(vorlage).alias("vorlage").cast(db.results_schema_map["vorlage"]),
             pl.lit(wf_id).alias("wf_id").cast(db.results_schema_map["wf_id"]),
-            pl.col("BEDP_MENGE_BEDARF_VM").alias("best_menge"),
+            order_qty_expr,
             pl.lit(freigabe_auto.value)
             .alias("freigabe_auto")
             .cast(db.results_schema_map["freigabe_auto"]),
@@ -356,18 +413,130 @@ def _results_workflow_100(
         ]
     )
 
-    return pl.concat([results, data])
+    return pl.concat([results_table, data])
+
+
+# main routine
+# results for filtered out entries written
+def workflow_910(
+    pipe_result: types.PipelineResult,
+) -> types.PipelineResult:
+    filter_mandant = pl.col("BEDP_MAN").is_in((1, 90))
+    filter_ignore_MNR26 = pl.col("MELDENUMMER") != 26
+
+    res = _apply_several_filters(
+        pipe_result.open,
+        filters=(
+            filter_mandant,
+            filter_ignore_MNR26,
+        ),
+    )
+    # write results for entries which were filtered out
+    pipe_result.results = _write_results(
+        pipe_result.results,
+        data=res.out_,
+        vorlage=False,
+        wf_id=910,
+        freigabe_auto=types.Freigabe.WF_910,
+        is_out=True,
+    )
+    pipe_result.open = res.in_
+
+    return pipe_result
+
+
+# this a main routine:
+# receives and gives back result objects
+def workflow_100_umbreit(
+    pipe_result: types.PipelineResult,
+    vm_criterion: str,
+) -> types.PipelineResult:
+    filter_meldenummer = pl.col("MELDENUMMER") == 18
+    filter_mandant = pl.col("BEDP_MAN") == 1
+    filter_number_vm = pl.col(vm_criterion) > 0
+
+    res = _apply_several_filters(
+        pipe_result.open,
+        (
+            filter_meldenummer,
+            filter_mandant,
+            filter_number_vm,
+        ),
+    )
+    pipe_result.results = _write_results(
+        results_table=pipe_result.results,
+        data=res.in_,
+        vorlage=True,
+        wf_id=100,
+        freigabe_auto=types.Freigabe.WF_100,
+        is_out=False,
+    )
+    pipe_result.open = res.out_
+
+    return pipe_result
 
 
 # Petersen not present in data
 
 # %%
-df_raw = get_raw_data()
-df_start = prepare_base_data(df_raw)
-df_start
+# SAVING/LOADING
+p_save = Path.cwd() / "raw_data_from_sql_query_20251203-1.arrow"
+# df.write_ipc(p_save)
+df = pl.read_ipc(p_save)
+print(f"Number of entries: {len(df)}")
 
 # %%
-results_init = get_empyt_result_df()
+df.head()
+
+# %%
+removed_rows = []
+
+raw_data = df.clone()
+print(f"Length raw data: {len(raw_data)}")
+filter_mandant = pl.col("BEDP_MAN").is_in((1, 90))
+filter_ignore_MNR26 = pl.col("MELDENUMMER") != 26
+
+
+filtered = raw_data.filter(filter_mandant)
+filtered_n = raw_data.filter(~filter_mandant)
+num_filter = len(filtered)
+num_filter_n = len(filtered_n)
+removed_rows.append(filtered_n)
+print(f"Length filtered: {num_filter}")
+print(f"Length filtered out: {num_filter_n}")
+print(f"Length all: {num_filter + num_filter_n}")
+raw_data = filtered
+out = pl.concat(removed_rows)
+print(f"Length out: {len(out)}")
+
+# %%
+print("---------------------------------------")
+filtered = raw_data.filter(filter_ignore_MNR26)
+filtered_n = raw_data.filter(~filter_ignore_MNR26)
+num_filter = len(filtered)
+num_filter_n = len(filtered_n)
+len(filtered_n)
+# %%
+removed_rows.append(filtered_n)
+print(f"Length filtered: {num_filter}")
+print(f"Length filtered out: {num_filter_n}")
+print(f"Length all: {num_filter + num_filter_n}")
+out = pl.concat(removed_rows)
+print(f"Length out: {len(out)}")
+
+# %%
+raw_data = df.clone()
+pipe_res = get_empyt_pipeline_result(raw_data)
+pipe_res.results
+
+# %%
+pipe_res = workflow_910(pipe_res)
+pipe_res
+# df_start = prepare_base_data(df_raw)
+# df_start
+
+# %%
+results_init = get_empyt_pipeline_result()
 results, filt_out = workflow_100_umbreit(results_init, df_start, VM_CRITERION)
 # df is where results are known
 # filt_out contains entries for other workflows
@@ -398,7 +567,7 @@ def _init_workflow_200_umbreit(
     filter_mandant = pl.col("BEDP_MAN") == 1
     filter_number_vm = pl.col(vm_criterion) == 0
 
-    relevant, filt = apply_several_filters(
+    relevant, filt = _apply_several_filters(
         data, (filter_meldenummer, filter_mandant, filter_number_vm)
     )
 
diff --git a/data_analysis/not_in_title_table.json b/data_analysis/not_in_title_table_20251202-1.json
similarity index 100%
rename from data_analysis/not_in_title_table.json
rename to data_analysis/not_in_title_table_20251202-1.json
diff --git a/data_analysis/queries.sql b/data_analysis/queries.sql
index 19e1ca3..3aff2e3 100644
--- a/data_analysis/queries.sql
+++ b/data_analysis/queries.sql
@@ -35,5 +35,5 @@ SELECT count(*) FROM EXT_BEDPBED;
 -- -- WHERE bedp.BEDP_MAN IN (1, 90) AND t_info.MELDENUMMER != 26;
 -- PROMPT ######################################
 
--- SELECT * FROM EXT_TITEL_INFO t_info WHERE t_info.TI_NUMMER = 6132326;
-SELECT * FROM EXT_TITEL_INFO t_info WHERE t_info.TI_NUMMER = 4591588;
+SELECT * FROM EXT_TITEL_INFO t_info WHERE t_info.TI_NUMMER = 6132326;
+-- SELECT * FROM EXT_TITEL_INFO t_info WHERE t_info.TI_NUMMER = 4591588;
diff --git a/src/umbreit/types.py b/src/umbreit/types.py
index 7b24e33..21cf817 100644
--- a/src/umbreit/types.py
+++ b/src/umbreit/types.py
@@ -1,7 +1,7 @@
 from __future__ import annotations
 
 import enum
-from dataclasses import dataclass
+from dataclasses import dataclass, field
 from typing import TypeAlias
 
 import polars as pl
@@ -10,6 +10,19 @@ PolarsSchema: TypeAlias = dict[str, type[pl.DataType]]
 PolarsNullValues: TypeAlias = dict[str, str]
 
 
+@dataclass(slots=True, kw_only=True, eq=False)
+class FilterResult:
+    in_: pl.DataFrame
+    out_: pl.DataFrame
+
+
+@dataclass(slots=True, kw_only=True, eq=False)
+class PipelineResult:
+    results: pl.DataFrame
+    open: pl.DataFrame
+
+
 class Freigabe(enum.Enum):
     WF_100 = False
     WF_200 = False
+    WF_910 = False