accept empty filter parameter in id:

[SlowMo24]

The following query results in code 400 I would expect it to not filter for ids.

(landuse=* or natural=* or waterway=*) and geometry:polygon and ((not id:() and type:way) or (not id:() and type:relation))

[SlowMo24]

also only 0 is accepted as dummy value (no id<0)

[FabiKo117]

I can't follow. I don't quite get why you want to specifically "not filter for ids". If you don't specify any id filter, then automatically you don't filter for them, i.e. the id is irrelevant.
edit: So for further explanation: the id is not something like a tag, where it makes sense to write "not maxspeed=30" for example to exclude features with this specific tag. Every feature has an id.

[SlowMo24]

yes, I understand this seems odd. It happened in an automated environment where I query data for different regions but want to ignore data that I already have. Sometimes I have no data for a region resulting in the above filter. You can decide if you want to close this as no-fix.

[tyrasd]

@SlowMo24 https://gitlab.gistools.geog.uni-heidelberg.de/giscience/big-data/ohsome/libs/ohsome-filter/-/issues would be the right place to discuss this

//edit: https://gitlab.gistools.geog.uni-heidelberg.de/giscience/big-data/ohsome/libs/ohsome-filter/-/issues/10