Hi, The sentence: Do you have accounts you would like to provide Spanish sales literature? What is the error? Is there a preposition missing? Yes, there seems to be.
The meaning is a bit unclear. eg Are they asking for literature about the accounts? Or literature for the people that the accounts belong to?
If the intention is to ask people with interesting narratives/accounts to sell their accounts/narratives, then the sentence should have been:
Do you have accounts you would like to provide as Spanish sales literature?
On the other hand, if Spanish Sales Literature in itself is a company specializing in turning other people's accounts/narratives into presentable/marketable sales