item 14 principal accountant fees services substitute information provided accordance general instruction j form 10k item 1119 regulation ab affiliations certain relationships related transactions pursuant instructions item 1119 regulation ab information required item 1119 omitted annual report form 10k substantially information provided previously prospectus timely filed pursuant rule 424 general rules regulations promulgated securities act 1933 central index key cik annual report form 10k item 1122 regulation ab compliance applicable servicing criteria wamu asset acceptance corp role depositor washington mutual bank role servicer “wmb” washington mutual mortgage securities corp role administrative agent “wmmsc” american security insurance company standard guaranty insurance company together role hazard insurance servicer “asic” deutsche bank national trust company roles bond administrator custodian collectively “servicing parties” identified registrant parties participating servicing function respect asset pool held trust servicing parties completed report assessment compliance servicing criteria applicable “servicing report” servicing reports attached exhibits form 10k servicing parties provided attestation report “attestation report” one public accounting firms reports also attached exhibits form 10k none servicing reports attestation reports identified material instance noncompliance servicing criteria applicable respective servicing party except respect 1 wmb compliance item 1122d2viid approximately 532 account reconciliations approximately 60000 statements approximately 09 reconciling items resolved within 90 days identification due migration functions personnel separate geographic location reconciling items resolved meantime processes procedures place provide ongoing compliance requirement b item 1122d3ib 3ii programming change resulted miscalculation liquidation proceeds failure include liquidation proceeds aggregate amount approximately 9694614 september 2007 distribution respect 13 securitizations subject regulation ab wmb securitizations remitted applicable shortfall amount october 1 2007 applicable trustee required applicable pooling servicing agreement programming error corrected october 2007 c item 1122d3ii prepayment fees due investors 16 securitizations subject regulation ab calculated incorrectly certain loans deferred interest resulting shortfall distributions investors aggregate amount expected exceed 500000 addition wmb determined certain circumstances wmb’s automated loan servicing system calculates applicable interest used determine prepayment premiums inconsistently requirements certain mortgage loan notes could result underpayment prepayment premiums due certificateholders prepayment premium classes terms applicable transaction agreements approximately 15 loans 8 securitizations subject regulation ab identified may affected 2007 amounts due result miscalculations delivered applicable trustee distribution affected investors analysis matters completed amounts due case securitization determined processes procedures currently implemented provide accurate calculation prepayment fees wmb making changes automated servicing system provide identified variations terms mortgage note prepayment requirements item 1122d4vii respect 4 series mortgagebacked securities wmb recently selfidentified foreclosure cases initiated connection approximately 175 loans wmb expressly disclose interests loans applicable trustees extent necessary applicable law court rules wmb promptly move amend foreclosure pleadings investors made whole direct losses additional costs expenses incurred result failure identify interests trusts loans proceeding applicable law court rules trusts’ interests must disclosed wmb conduct research additional loans identified treated similarly wmb make applicable trusts whole losses arise treatment e item 1122d4xiv delinquent second lien mortgage loans charged 180 days required applicable pooling servicing agreements case two securitizations subject regulation ab mortgage loans charged required upon identification noncompliance processes procedures put place provide ongoing compliance requirement 2 wmmsc compliance item 1122d2viid one reconciling item resolved within 90 days original identification reconciling item resolved within 124 days original identification processes procedures place provide ongoing compliance requirement b item 1122d3ii prepayment fees due investors 16 securitizations subject regulation ab calculated incorrectly certain loans deferred interest resulting shortfall distributions investors aggregate amount expected exceed 1500000 1000000 expected attributable incorrect calculations performed asserting party 500000 expected attributable incorrect calculations performed washington mutual bank affiliate asserting party amounts due result miscalculations delivered applicable trustee distribution affected investors analysis matter completed amounts due case securitization determined processes procedures implemented currently validated provide accurate calculation prepayment fees c item 1122d3ii certain libor values incorrectly determined december 2007 distribution respect certain classes securities subject pooling servicing agreements require libor values determined second day banks london open foreign exchange transactions prior 25th day prior calendar month referenced month specified libor valuation day thanksgiving day united states america banks open transactions foreign exchange day banks london libor established day immediately preceding thanksgiving day rather thanksgiving day required applicable pooling servicing agreements difference libor values 00562 percentage points accordingly certain classes securities overpaid interest certain classes securities underpaid interest amount december 2007 interest reallocated investors using correct libor values total interest reallocated affected series securities ranged approximately 304 3050 aggregate original interest payments distributed affected series securities ranged approximately 1124821 11126217 procedures implemented provide accurate determinations libor 3 asic compliance item 1122d4xii reporting period covered 10k annual report asic sufficient policies procedures place capture information necessary determine compliance item 1122d4xii stated letter dated january 30 2008 attached hereto exhibit 334 asic implemented policies procedures capture information required comply provision item 1123 regulation ab servicer compliance statement washington mutual bank role servicer wmmsc role administrative agent identified registrant servicers respect asset pool held trust washington mutual bank wmmsc completed statement compliance applicable servicing criteria “compliance statement” case signed authorized officer washington mutual bank wmmsc respectively compliance statements attached exhibits form 10k none compliance statements identified material instance noncompliance respective servicers obligation applicable servicing agreement except wmb reported following programming change resulted miscalculation liquidation proceeds failure include liquidation proceeds september 2007 distribution resulted shortfall 34594400 subsequently remitted trustee october 1 2007 programming error corrected october 2007 part iv item 15 item 7 management’s discussion analysis financial condition results operations item 7a item 7a quantitative qualitative disclosures market risk item 8 item 8 financial statements supplementary data item 9 item 15 exhibits financial statement schedules wamu assetbacked certificates wamu series 2007he1 exhibit description 41 pooling servicing agreement incorporated herein reference exhibit 41 form 8k filed issuing entity january 31 2007 42 mortgage loan purchase agreement incorporated herein reference exhibit 42 form 8k filed issuing entity january 31 2007 43 isda long form swap confirmation credit support annex novation agreement dated january 16 2007 bank new york deutsche bank national trust company individual capacity solely trustee behalf supplemental interest trust incorporated herein reference exhibit 43 form 8k filed issuing entity january 31 2007 44 administrative agent agreement wmb servicer washington mutual mortgage securities corp successors assigns capacity administrative agent effective april 1 2006 incorporated reference exhibit 44 form 8k filed file 131131252 july 26 2006 certification david beck pursuant section 302 sarbanesoxley act 2002 331 report assessment compliance servicing criteria wamu asset acceptance corp 332 report assessment compliance servicing criteria washington mutual bank 333 report assessment compliance servicing criteria american security insurance company standard guaranty insurance company tracksure insurance agency inc 334 letter dated january 30 2008 regarding restated assessment reporting period january 1 2006 december 31 2006 american security insurance company standard guaranty insurance company tracksure insurance agency inc 335 report assessment compliance servicing criteria washington mutual mortgage securities corp 336 report assessment compliance servicing criteria deutsche bank national trust company 341 attestation report deloitte touche llp assessment compliance servicing criteria wamu asset acceptance corp 342 attestation report deloitte touche llp assessment compliance servicing criteria washington mutual bank 343 attestation report pricewaterhousecoopers llp assessment compliance servicing criteria american security insurance company standard guaranty insurance company tracksure insurance agency inc 344 attestation report deloitte touche llp assessment compliance servicing criteria washington mutual mortgage securities corp 345 attestation report kpmg llp assessment compliance servicing criteria deutsche bank national trust company 351 servicer compliance statement washington mutual bank 352 servicer compliance statement washington mutual mortgage securities corp 991 certain information concerning mortgage loans prepared connection registrants wamu assetbacked certificates wamu series 2007he1 incorporated herein reference exhibit 991 form 8k filed issuing entity january 12 2007 signatures pursuant requirements section 13 15d securities exchange act 1934 registrant duly caused report signed behalf undersigned thereunto duly authorized exhibit index wamu assetbacked certificates wamu series 2007he1 exhibit description 41 pooling servicing agreement incorporated herein reference exhibit 41 form 8k filed issuing entity january 31 2007 42 mortgage loan purchase agreement incorporated herein reference exhibit 42 form 8k filed issuing entity january 31 2007 43 isda long form swap confirmation credit support annex novation agreement dated january 16 2007 bank new york deutsche bank national trust company individual capacity solely trustee behalf supplemental interest trust incorporated herein reference exhibit 43 form 8k filed issuing entity january 31 2007 44 administrative agent agreement wmb servicer washington mutual mortgage securities corp successors assigns capacity administrative agent effective april 1 2006 incorporated reference exhibit 44 form 8k filed file 131131252 july 26 2006 certification david beck pursuant section 302 sarbanesoxley act 2002 331 report assessment compliance servicing criteria wamu asset acceptance corp 332 report assessment compliance servicing criteria washington mutual bank 333 report assessment compliance servicing criteria american security insurance company standard guaranty insurance company tracksure insurance agency inc letter dated january 30 2008 regarding restated assessment reporting period january 1 2006 december 31 2006 american security insurance company standard guaranty insurance company tracksure insurance agency inc 335 report assessment compliance servicing criteria washington mutual mortgage securities corp 336 report assessment compliance servicing criteria deutsche bank national trust company 341 attestation report deloitte touche llp assessment compliance servicing criteria wamu asset acceptance corp 342 attestation report deloitte touche llp assessment compliance servicing criteria washington mutual bank 343 attestation report pricewaterhousecoopers llp assessment compliance servicing criteria american security insurance company standard guaranty insurance company tracksure insurance agency inc 344 attestation report deloitte touche llp assessment compliance servicing criteria washington mutual mortgage securities corp 345 attestation report kpmg llp assessment compliance servicing criteria deutsche bank national trust company 351 servicer compliance statement washington mutual bank 352 servicer compliance statement washington mutual mortgage securities corp 991 certain information concerning mortgage loans prepared connection registrants wamu assetbacked certificates wamu series 2007he1 incorporated herein reference exhibit 991 form 8k filed issuing entity january 12 2007