Die foutkode is in die gebruikershandleiding.

Because die is the Afrikaans definite article, meaning the.

In Die foutkode is in die gebruikershandleiding:

• Die foutkode = the error code
• die gebruikershandleiding = the user manual

A useful thing to know is that Afrikaans uses die much more simply than English learners may expect:

• no gender changes
• no case changes
• the same form is used for singular and plural definite nouns in most ordinary situations

So both the error code and the user manual use die.

Afrikaans, like Dutch and German, very often forms compound nouns by writing them as one word.

So:

• fout = error / fault
• kode = code
• foutkode = error code

And:

• gebruiker = user
• handleiding = manual / guide
• gebruikershandleiding = user manual

English often writes these as two words, but Afrikaans usually combines them into a single compound noun.

The -s- is a linking sound/letter often used in Afrikaans compounds.

Here the word is built from:

• gebruiker = user
• handleiding = manual

But in the compound, it becomes:

• gebruiker + s + handleiding = gebruikershandleiding

This -s- does not mean plural here. It just helps connect the parts of the compound naturally. English learners often think it means users manual, but in practice the whole word means user manual.

Yes, in this sentence it is very similar to English word order.

The structure is:

• Die foutkode = subject
• is = verb
• in die gebruikershandleiding = prepositional phrase

So the pattern is:

Subject + verb + prepositional phrase

That is why it feels very close to English:

• The error code is in the user manual.

Afrikaans word order can become different in other sentence types, especially in subordinate clauses, but this basic main clause is straightforward.

Mostly, yes. Is is the present tense form of wees (to be) for is.

Examples:

• Die handleiding is nuut. = The manual is new.
• Die foutkode is hier. = The error code is here.
• Die antwoord is korrek. = The answer is correct.

So in your sentence, is simply links the subject to its location.

Usually, yes. In this sentence, in means in or inside.

• in die gebruikershandleiding = in the user manual

It is the normal preposition to use here.

Sometimes English might say in, inside, or even contained in, but Afrikaans usually just uses in for this kind of idea.

A rough learner-friendly breakdown is:

• ge-BRAY-kers-han-ley-ding

More carefully, the parts are roughly:

• gebruiker ≈ khuh-BRAY-ker
• handleiding ≈ HAN-duh-lay-ding

A few pronunciation notes:

• ui in gebruiker is a special Afrikaans/Dutch vowel sound that does not match English exactly.
• g in Afrikaans is usually a throaty sound, not a hard English g.
• ei/yding in handleiding sounds like ay in many standard pronunciations.

You do not need perfect pronunciation immediately; it is more important at first to recognize the word as one long compound.

Afrikaans does have an indefinite article: ’n, which means a/an.

But this sentence uses die, meaning the, because it refers to a specific error code and a specific manual.

Compare:

• Die foutkode is in die gebruikershandleiding. = The error code is in the user manual.
• ’n Foutkode is in ’n gebruikershandleiding. = An error code is in a user manual.

A very important spelling point:

• ’n is written with an apostrophe and a lowercase n
• even at the start of a sentence, the n stays lowercase unless the whole word is being capitalized for typography

Yes, it is a normal and useful word for user manual.

Depending on context, Afrikaans speakers might also use related words such as:

• handleiding = manual / guide
• gebruikersgids = user guide
• manual = sometimes borrowed in technical contexts, depending on speaker and setting

But gebruikershandleiding is perfectly standard and very clear.

You would usually make the nouns plural like this:

• foutkode → foutkodes
• gebruikershandleiding → gebruikershandleidings

So the sentence becomes:

• Die foutkodes is in die gebruikershandleidings.

A few notes:

• die still stays die
• Afrikaans verbs do not change much for person/number in the present tense, so is remains is

That is different from English, where is would become are.

Afrikaans usually uses a double negative:

• Die foutkode is nie in die gebruikershandleiding nie.

Pattern:

• nie after the verb phrase or relevant part
• another nie at the end of the clause

So:

• is nie in die gebruikershandleiding nie = is not in the user manual

This double-nie pattern is one of the most important features of Afrikaans grammar.

Sometimes, but not usually in this sentence.

• in is the normal, natural choice
• binne means something more like inside

So:

• Die foutkode is in die gebruikershandleiding. = normal and idiomatic
• Die foutkode is binne die gebruikershandleiding. = possible, but sounds more emphatic or literal

For information contained in a book, document, or manual, in is the usual word.

No. Unlike German, Afrikaans does not capitalize all nouns.

So this sentence is correctly written as:

• Die foutkode is in die gebruikershandleiding.

Only the first word of the sentence is capitalized because it begins the sentence, not because it is a noun.

That means:

• foutkode stays lowercase
• gebruikershandleiding stays lowercase unless it is part of a title or heading style