الموظف طلب مني نسخة من البطاقة قبل التحويل.

Yes — it is understandable and natural, especially in a formal context like a bank, office, or government service.

That said, it sounds a bit formal / standard-Arabic-leaning. In everyday Egyptian, many people would more casually say:

• الموظف طلب مني صورة البطاقة قبل التحويل
• or even قبل ما يعمل التحويل depending on the situation

A very common Egyptian choice is صورة البطاقة instead of نسخة من البطاقة for a copy of the ID/card.

طلب is the past tense, 3rd person masculine singular:

• طلب = he asked / he requested

It matches الموظف because الموظف is grammatically masculine singular.

If the subject were feminine, for example الموظفة (the female employee), you would say:

• الموظفة طلبت مني...

So the ت in طلبت marks the feminine past form.

طلب مني means asked me for or requested from me.

Literally, it is something like:

• طلب = asked / requested
• مني = from me

So:

• طلب مني نسخة = he asked me for a copy

English uses ask someone for something, but Arabic often uses a structure closer to request from someone something.

Because it is made of:

• من = from
• ي = me / my (the suffix pronoun -ī)

When they combine, they become:

• مني = from me

This is very common in Arabic. Other examples:

• منك = from you
• منه = from him
• منها = from her

So طلب مني is literally requested from me.

This is a different من with a different job.

In:

• طلب مني → من means from
• نسخة من البطاقة → من means of / from

So نسخة من البطاقة means:

• a copy of the card
• literally: a copy from the card

Arabic often uses من where English uses of in this kind of phrase.

It is correct, but in spoken Egyptian, صورة is often more common when talking about a copied document or ID.

So:

• نسخة من البطاقة = correct, slightly more formal
• صورة البطاقة = very common in Egypt

In real life, an Egyptian clerk is very likely to say:

• هات صورة البطاقة
• محتاجين صورة من البطاقة

So if you want very natural everyday Egyptian, صورة is worth learning here.

Literally, البطاقة means the card.

But in this kind of office/banking context, it often means the ID card, especially the national ID, if that is already understood from the situation.

So depending on context, البطاقة might mean:

• ID card
• bank card
• card in a general sense

In Egypt, if someone at a bank or office says البطاقة, people often understand it as the national ID card, unless another card has already been mentioned.

Yes. That is also correct.

Compare:

• الموظف طلب مني نسخة من البطاقة
  = The employee asked me for a copy of the card

• طلب الموظف مني نسخة من البطاقة
  = same meaning, but it starts with the verb: The employee asked me...

Both are natural. The difference is mostly about style and focus:

• الموظف طلب... starts with the subject, a little like As for the employee, he asked...
• طلب الموظف... starts with the action, which can sound a bit more narrative

In everyday Arabic, both word orders are common.

Because قبل can be followed by either:

1. a noun
2. or a full clause

Here it is followed by a noun:

• قبل التحويل = before the transfer

That is a compact, formal way to say it.

In more conversational Egyptian, people often use قبل ما + a verb, for example:

• قبل ما يحوّل
• قبل ما يعمل التحويل

So:

• قبل التحويل = more formal, noun-based
• قبل ما... = very common in speech

التحويل literally means the transfer.

Depending on context, it could mean:

• a bank transfer
• a money transfer
• a remittance
• sometimes a more general transfer/conversion

In this sentence, the most likely meaning is something like:

• before the money transfer
• before processing the transfer

Because of the office/banking tone of the sentence.

A careful Egyptian-style pronunciation could sound like:

• el-mowazzaf talab minnī nuskha min el-biṭā'a 'abl et-taḥwīl

A few useful notes:

• الموظف → el-mowazzaf
  The ال keeps its l sound here.

• مني → minnī
  In speech, it often sounds like there is a doubled n.

• البطاقة → el-biṭā'a
  Many Egyptians pronounce short i sounds closer to e, so you may also hear something like el-beṭa'a.

• قبل → 'abl
  The letter ق is often pronounced as a glottal stop in Egyptian Arabic.

• التحويل → et-taḥwīl
  Here the ال changes in pronunciation because ت is a sun letter, so you hear et-taḥwīl, not el-taḥwīl.

So a very natural Egyptian reading would be close to:

• el-mowazzaf talab minnī nuskha min el-biṭā'a 'abl et-taḥwīl