GET query UserEditHistory where targetEntity.customText26 IS NULL

[mverhave]

Dear support,

We are building an integration between Bullhorn and AFAS for the client Loyal Interim. While querying the UserEditHistory for targetEntity.personSubtype='Candidate' it seems not possible to use the where condition targetEntity.customText26 IS NULL. We have never experienced issues with filtering on customText fields. For another client (TOPS personeel) we do exactly the same call, but the use targetEntity.customText7 instead of targetEntity.customText26. Could you please let me know why filtering on targetEntity.customText26 gives an error?


Regards,
Martine Verhave