Cleric Domain Spells

[Sumedocin]

I just have a short and simple question, I can't seem to find an answer for it. It seems that it's easily possible, but because it's domains, it's foggy.

As an example, can I use a 5th level domain slot to prepare one of my 4th or lower level domain spells?

I ask because I want to swap a useless domain spell, for a useful one of a lower level. Why prepare a Locate Object, when I can prepare a second Longstrider or Comprehend Languages? Again, as an example.

[Nefreet]

Yes, you may prepare lower level domain spells in higher level domain slots. It is no different from preparing lower level non-domain spells in higher level non-domain slots.

[Weirdo]

Yes.

As Nefreet said, the general rule is that you can prepare a lower level spell in a higher level slot. Rules for domain spell slots do not prohibit this:

Domains wrote:

Each domain grants a number of domain powers, dependent upon the level of the cleric, as well as a number of bonus spells. A cleric gains one domain spell slot for each level of cleric spell she can cast, from 1st on up. Each day, a cleric can prepare one of the spells from her two domains in that slot. If a domain spell is not on the cleric spell list, a cleric can prepare it only in her domain spell slot. Domain spells cannot be used to cast spells spontaneously.

You may select one of the spells from your two domains. It does not add an extra requirement that it must be one of the spells of that level from one of your two domains.

[Sumedocin]

That answers and clarifies my question. Thank you very much both of you. Thank you Weirdo for the detailed answer with source.