Can you share a few screenshots for the same ? What I can think of is that the backend tables are missing in your Data Model.

Sure this is an example, we're using the starter kit for SAP ECC since is the only one available for P2P in the marketplace, but in fact, we're using transformation from S4HANA P2P connector.

The transformation we're using is this one that brings the connector by default:

-- Query No: 1

DROP TABLE IF EXISTS "TCURF_CC";

-- Query No: 2

DROP TABLE IF EXISTS "TCURF_TMP";

-- Query No: 3

CREATE TABLE "TCURF_TMP" AS(

    SELECT DISTINCT

    *

    ,CAST(NULL AS TIMESTAMP) AS "VALID_START"

    ,CAST(NULL AS TIMESTAMP) AS "VALID_END"

    ,DENSE_RANK() OVER (ORDER BY

        TCURF."MANDT"

        ,TCURF."KURST"

        ,TCURF."FCURR"

        ,TCURF."TCURR"

        ) AS "TCURF_KEY"

    ,ROW_NUMBER() OVER (PARTITION BY

        TCURF."MANDT"

        ,TCURF."KURST"

        ,TCURF."FCURR"

        ,TCURF."TCURR"

        ORDER BY (99999999-CAST(TCURF."GDATU" AS INT)) ASC) AS "TCURF_ROWNR"

FROM

    "TCURF" as TCURF

WHERE 1=1

    AND (99999999-cast(TCURF."GDATU" as int)) >= 18000000

    AND (99999999-cast(TCURF."GDATU" as int)) <= 20990000

);

-- Query No: 4

CREATE TABLE "TCURF_CC" AS(

SELECT

    *

FROM

    "TCURF_TMP");

-- Query No: 5

UPDATE

    "TCURF_CC"

SET

    "VALID_START" = CAST(LPAD(CAST((99999999-CAST("GDATU" AS INT)) AS VARCHAR(10)),8,'0') || ' ' || '00:00:00' AS TIMESTAMP);

-- Query No: 6

UPDATE

    "TCURF_CC" AS TCURF_CC

SET

    "VALID_END" = CAST(LPAD(CAST((99999999-CAST(TCURF_TMP."GDATU" AS INT)) AS VARCHAR(10)),8,'0') || ' ' || '00:00:00' AS TIMESTAMP)

FROM

    "TCURF_TMP" AS TCURF_TMP

WHERE 1=1

    AND TCURF_CC."TCURF_KEY" = TCURF_TMP."TCURF_KEY"

    AND TCURF_CC."TCURF_ROWNR" + 1 = TCURF_TMP."TCURF_ROWNR";

-- Query No: 7

UPDATE

    "TCURF_CC"

SET

    "VALID_END" = '2099-01-01'

WHERE

    "VALID_END" IS NULL;

-- Query No: 8

DROP TABLE IF EXISTS "TCURF_TMP";

-------------------------------------

-------------------------------------

-- Statement: Database Preparation: Create Table: TCURR_CC

-- Query No: 1

--DROP TABLE IF EXISTS "P2P_TCURR";

DROP TABLE IF EXISTS "TCURR_CC";

-- Query No: 2

DROP TABLE IF EXISTS "TCURR_TMP";

-- Query No: 3

CREATE TABLE "TCURR_TMP" AS(

SELECT

    TCURR."MANDT"

    ,TCURR."KURST"

    ,TCURR."FCURR"

    ,TCURR."TCURR"

    ,TCURR."GDATU"

    --,TO_DATE(CAST((99999999-TCURR.GDATU)  AS VARCHAR),'YYYYMMDD') AS GDATU

    ,TCURR."UKURS"

    ,TCURR."FFACT"

    ,TCURR."TFACT"

    ,CAST(NULL AS TIMESTAMP) AS "VALID_START"

    ,CAST(NULL AS TIMESTAMP) AS "VALID_END"

    ,DENSE_RANK() OVER (ORDER BY

        TCURR."MANDT"

        ,TCURR."KURST"

        ,TCURR."FCURR"

        ,TCURR."TCURR"

        ) AS "TCURR_KEY"

    ,ROW_NUMBER() OVER (PARTITION BY

        TCURR."MANDT"

        ,TCURR."KURST"

        ,TCURR."FCURR"

        ,TCURR."TCURR"

        ORDER BY (99999999-CAST(TCURR."GDATU" AS INT)) ASC) AS "TCURR_ROWNR"

FROM

    "TCURR" AS TCURR

WHERE 1=1

    AND (99999999-CAST(TCURR."GDATU" AS INT)) >= 18000000

    AND (99999999-CAST(TCURR."GDATU" AS INT)) <= 20990000

);

-- Query No: 4

CREATE TABLE "TCURR_CC" AS(

SELECT

    *

FROM

    "TCURR_TMP"

);

-- Query No: 5

UPDATE

    "TCURR_CC" AS TCURR_CC

SET

    "VALID_START" = CAST(LPAD(CAST((99999999-cast(TCURR_CC."GDATU" AS INT)) AS VARCHAR(10)),8,'0') || ' ' || '00:00:00' AS TIMESTAMP)

;

-- Query No: 6

UPDATE

    "TCURR_CC"  AS TCURR_CC

SET

    "VALID_END" = CAST(LPAD(CAST((99999999-CAST(TCURR_TMP."GDATU" AS INT)) AS VARCHAR(10)),8,'0') || ' ' || '00:00:00' AS timestamp)

FROM

    "TCURR_TMP" AS TCURR_TMP

WHERE 1=1

    AND TCURR_CC."TCURR_KEY" = TCURR_TMP."TCURR_KEY"  

    AND TCURR_CC."TCURR_ROWNR" + 1=TCURR_TMP."TCURR_ROWNR"

;

-- Query No: 7

UPDATE

    "TCURR_CC" AS TCURR_CC

SET

    "VALID_END" = '2099-01-01'

WHERE

    "VALID_END" IS NULL

;

-- Query No: 8

DROP TABLE IF EXISTS "TCURR_TMP";

----------------------------------------------------------------

--We created an additional table to change type data to some columns if it is necessary on TCURR

DROP TABLE IF EXISTS "P2P_TCURR";

CREATE TABLE P2P_TCURR AS (

WITH Q1 AS (

    select DISTINCT

    ROW_NUMBER() OVER (PARTITION BY TRIM(TCURR.MANDT),TRIM(TCURR.FCURR),TRIM(TCURR.GDATU) ORDER BY TRIM(TCURR.MANDT),TRIM(TCURR.FCURR),TRIM(TCURR.GDATU) DESC) AS TCURR_RANK,

    TCURR.MANDT,

    TCURR.KURST,

    TCURR.FCURR,

    TCURR.TCURR,

    CAST(LPAD(CAST((99999999-CAST(TCURR."GDATU" AS INT)) AS VARCHAR(10)),8,'0') || ' ' || '00:00:00' AS timestamp) AS GDATU_TIME,

    TCURR.GDATU AS GDATU,

    CAST(TCURR.UKURS AS FLOAT) AS UKURS,

    CAST(TCURR.FFACT AS FLOAT) AS FFACT,

    CAST(TCURR.TFACT AS FLOAT) AS TFACT,

    TCURR.VALID_START,

    TCURR.VALID_END,

    TCURR.TCURR_KEY,

    TCURR.TCURR_ROWNR

FROM TCURR_CC AS TCURR

   )

SELECT Q1.* FROM Q1

JOIN (

SELECT "MANDT", "FCURR", GDATU, MAX (TCURR_RANK) AS MAX_TCURR_RANK FROM Q1

GROUP BY 1, "FCURR",GDATU

) AS Q2 ON Q2.MAX_TCURR_RANK = Q1.TCURR_RANK

AND Q2."MANDT" = Q1."MANDT"

AND Q2."FCURR" = Q1."FCURR"

AND Q2."GDATU" = Q1."GDATU"

);

----------------------------------------------------------------

--We created an additional table to change type data to some columns if it is necessary on TCURF

DROP TABLE IF EXISTS P2P_TCURF;

CREATE TABLE P2P_TCURF AS (

    WITH Q1 AS (

    select DISTINCT

    ROW_NUMBER() OVER (PARTITION BY TRIM(TCURF.MANDT),TRIM(TCURF.FCURR)ORDER BY TRIM(TCURF.MANDT),TRIM(TCURF.FCURR) DESC) AS TCURR_RANK,

    TCURF.MANDT,

    TCURF.KURST,

    TCURF.FCURR,

    TCURF.TCURR,

    TCURF.GDATU AS GDATU,

    CAST(TCURF.FFACT AS FLOAT) AS FFACT,

    CAST(TCURF.TFACT AS FLOAT) AS TFACT,

    TCURF.ABWCT,

    TCURF.ABWGA

FROM "TCURF_CC" AS TCURF

--WHERE

    --TCURF.KURST = 'M'

    )

SELECT Q1.* FROM Q1

JOIN (

SELECT "MANDT", "FCURR", MAX (TCURR_RANK) AS MAX_TCURR_RANK FROM Q1

GROUP BY 1, "FCURR"

) AS Q2 ON Q2.MAX_TCURR_RANK = Q1.TCURR_RANK

AND Q2."MANDT" = Q1."MANDT"

AND Q2."FCURR" = Q1."FCURR"

);