The current data dictionaries for FIX 4.4 upwards lack the enumerated values of 661/AllocAcctIDSource: ``` <field number="660" name="AcctIDSource" type="INT"> <value enum="1" description="BIC"/> <value enum="2" description="SID_CODE"/> <value enum="3" description="TFM"/> <value enum="4" description="OMGEO"/> <value enum="5" description="DTCC_CODE"/> <value enum="99" description="OTHER"/> </field> <field number="661" name="AllocAcctIDSource" type="INT"/> ``` According to the FIXimate the values shall be provided as the same ones as for AcctIDSource: https://fiximate.fixtrading.org/en/FIX.5.0SP2_EP264/tag661.html So I would add them for consistency.