Number of parts in shape is incorrect for its geometry type

Hello

I am trying to write some polygon data from a csv file which contains the geometry data to an esri sde database, all the conversion is fine until i come to write the data when i get the error below. It says that the Number of parts in shape is incorrect for its geometry type. What does this actually mean. The data is building a polygon, which it does. I have added in a geometry filter to get the areas and polygons followed by a geometry coercer set to fme_polygon...

Any ideas how to fix this or what could be wrong??

Error while updating feature in the table/feature class 'OS_NGD_BLD_FTS_BUILDINGPART'. The error number from ArcObjects is: '-2147215922'. The error message from ArcObjects is: {Number of parts in shape is incorrect for its geometry type}

Storing feature(s) to FME feature store file `\\\\dnfme01\\FMEWorkbench\\Workspaces\\Ordnance Survey\\National Geospatial Database\\OS NGD Buildings Daily Update_log.ffs'

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Feature Type: `OS_NGD_BLD_FTS_BUILDINGPART'

Attribute(32 bit real)       : `absoluteheightmaximum' has value `107.5'

Attribute(32 bit real)       : `absoluteheightminimum' has value `101.51'

Attribute(32 bit real)       : `absoluteheightroofbase' has value `104.53'

Attribute(string: windows-1252)  : `associatedstructure' is <null>

Attribute(string: windows-1252)  : `capturespecification' has value `Urban'

Attribute(string: windows-1252)  : `changetype' has value `New'

Attribute(64 bit unsigned integer) : `csv_line_number' has value `4610'

Attribute(32 bit unsigned integer) : `csv_number_of_fields' has value `39'

Attribute(32 bit unsigned integer) : `csv_total_number_of_columns' has value `40'

Attribute(string: windows-1252)  : `description' has value `Building'

Attribute(string: windows-1252)  : `description_evidencedate' has value `19940804'

Attribute(string: windows-1252)  : `description_source' has value `Ordnance Survey'

Attribute(string: windows-1252)  : `description_updatedate' has value `19940804'

Attribute(string: windows-1252)  : `firstdigitalcapturedate' has value `19940804'

Attribute(string: UTF-8)      : `fme_db_operation' has value `UPSERT'

Attribute(string: UTF-8)      : `fme_feature_type' has value `CSV'

Attribute(string: UTF-8)      : `fme_geometry' has value `fme_polygon'

Attribute(entangled: string: UTF-8): `fme_type' has value `fme_area'

     entangled to geodb_type

Attribute(64 bit integer)     : `geodb_oid' has value `1'

Attribute(string: UTF-8)      : `geodb_type' has value `geodb_polygon'

Attribute(64 bit real)       : `geometry_area' has value `95.421825'

Attribute(string: windows-1252)  : `geometry_evidencedate' has value `20160823'

Attribute(string: windows-1252)  : `geometry_source' has value `Ordnance Survey'

Attribute(string: windows-1252)  : `geometry_updatedate' has value `20180412'

Attribute(string: windows-1252)  : `height_evidencedate' has value `20220417'

Attribute(string: windows-1252)  : `height_source' has value `Ordnance Survey'

Attribute(string: windows-1252)  : `height_updatedate' has value `20220824'

Attribute(string: windows-1252)  : `heightconfidencelevel' has value `Not Assessed'

Attribute(32 bit unsigned integer) : `isobscured' has value `0'

Attribute(32 bit integer)     : `multi_reader_full_id' has value `1'

Attribute(32 bit integer)     : `multi_reader_id' has value `1'

Attribute(string: UTF-8)      : `multi_reader_keyword' has value `CSV2_1'

Attribute(string: UTF-8)      : `multi_reader_type' has value `CSV2'

Attribute(32 bit unsigned integer) : `multi_writer_id' has value `0'

Attribute(string: windows-1252)  : `osid' has value `ccddf186-e99b-46b5-b6fd-416b8aac0b84'

Attribute(string: windows-1252)  : `oslandcover_evidencedate' has value `19940804'

Attribute(string: windows-1252)  : `oslandcover_source' has value `Ordnance Survey'

Attribute(string: windows-1252)  : `oslandcover_updatedate' has value `19940804'

Attribute(string: windows-1252)  : `oslandcovertiera' has value `Constructed'

Attribute(string: windows-1252)  : `oslandcovertierb' has value `Building'

Attribute(string: windows-1252)  : `oslanduse_evidencedate' has value `19940804'

Attribute(string: windows-1252)  : `oslanduse_source' has value `Ordnance Survey'

Attribute(string: windows-1252)  : `oslanduse_updatedate' has value `19940804'

Attribute(string: windows-1252)  : `oslandusetiera' has value `Residential Accommodation'

Attribute(string: windows-1252)  : `oslandusetierb' has value `Private Residence'

Attribute(string: windows-1252)  : `physicallevel' has value `Surface Level'

Attribute(32 bit real)       : `relativeheightmaximum' has value `5.99'

Attribute(32 bit real)       : `relativeheightroofbase' has value `3.02'

Attribute(string: windows-1252)  : `theme' has value `Buildings'

Attribute(string: windows-1252)  : `toid' has value `osgb1000014460052'

Attribute(string: windows-1252)  : `versionavailablefromdate' has value `20220827000000+00:00'

Attribute(string: windows-1252)  : `versionavailabletodate' has value `20230321235959+00:00'

Attribute(string: windows-1252)  : `versiondate' has value `20220826'

Coordinate System: `EPSG:27700'

Geometry Type: IFMEPolygon

Boundary:

  Geometry Type: IFMELine

  Number of Coordinates: 4 -- Coordinate Dimension: 2

  (482389.1,144658.55)(482387.44103171496,144656.07998055348)(482387.441,144656.08)(482389.1,144658.55)

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GEODATABASE_SDE writer: An error has occurred. Check the logfile above for details

An error has occurred. Check the logfile above for details