Prefixes Cannot Be Changed - Path of Exile

Using the Prefixes Cannot Be Changed meta-crafting mod to combine multiple other meta-crafting mods allows for even more control of the item. This way the player can often limit the pool of possible mods so that outcome of the craft is almost guaranteed.

Note:Prefixes are protected against Chaos Orb, Orb of Annulment, Divine Orb, Veiled Chaos Orb, Harvest reforges and Orb of Scouring. But are not protected against rerolls via essence, fossil, Maven's Orb, or Awakener's Orb.

The 'Prefixes Cannot Be Changed' is a also a suffix, so it will be rerolled. 

1. Orb of Scouring respects the meta-crafting mod. Orb of Scouring removes all random modifiers from a magic or rare piece of equipment. Implicit modifiers, quality, sockets, and links are not removed, as well as affixes protected by meta-crafting mods. This way, players can lock in modifiers without losing all the other modifiers. The better approach is where you have 3 desirable (and preferably, rare) prefixes on the item after scouring. 
2. Chaos Orb respects the meta-crafting mod. If you put 'prefixes cannot be changed' and use a Chaos Orb on the item, it will keep the prefixes and reroll new suffixes. Note that the "prefixes cannot be changed" is also a suffix and will be removed. Chaos spam is more random and cost-inefficient than the alt-aug-regal-scour or alc-scour methods. Also, since your 'cannot change prefix' mod is removed upon scouring, you'll need to add it on again afterward to protect your mod against your next chaos application and so on for each chaos. The risk of adding bad suffixes with no easy way to remove them is also not something I would accept.
3. Essence ignores the meta-crafting mod. Using an essence on an item with a meta-crafting mod (Prefixes Cannot Be Changed or Cannot roll Caster Modifiers) will ignore that mod and overwrite existing prefixes and suffixes ignoring any restrictions.
4. Fossil ignores the meta-crafting mod. Using a fossil + resonator on an item with a meta-crafting mod (Prefixes Cannot Be Changed or Cannot roll Caster Modifiers) will ignore that mod and overwrite existing prefixes and suffixes ignoring any restrictions.
5. Orb of Annulment respects the meta-crafting mods. It won't remove a prefix while the "Prefixes Cannot Be Changed" is on the item but it can remove the "Prefixes Cannot Be Changed" mods. This means that if you annul the item, you could potentially waste exalts because you annul the 'cannot change prefix' mod and have to craft it again. This is why nobody ever does that. If you want to mod suffixes, you scour.
6. Divine Orb respects the meta-crafting mod.
7. Veiled Chaos Orb respects prefixes/suffixes cannot be change.
8. Harvest reforges respect prefixes/suffixes cannot be change. 
9. Awakener's Orb now ignores Mastercrafting Metamods.
10. Maven's Orb now ignores Mastercrafting Metamods. Legacy modifiers or modifiers that can't be changed will not be affected.

Also, note that the meta-crafting mod occupies a suffix slot so after removing it you'll have a suffix slot to fill via Exalted Orb.

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How to unlock “Prefixes Cannot Be Changed” recipe

Prefix / Suffix	Crafting Recipes	Cost	Unlock Locations
of Prefixes, Suffix, Local	Prefixes Cannot Be Changed	2x Divine Orb	The Coward's Trial

The Coward's Trial is a unique map. Map Tier: 15, 16, 16, 16, 16. Requires Level 77.

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Prefixes Cannot Be Changed PoE

In Path of Exile, the "Prefixes Cannot Be Changed" crafting modifier is a powerful tool used to manipulate and improve items. It essentially acts as a shield, protecting the existing prefixes on an item from being altered by most crafting orbs and actions. Here's a breakdown of its key features:

What it does:

• Once applied to an item, "Prefixes Cannot Be Changed" prevents any existing prefix modifiers from being removed, overridden, or changed in any way by most crafting methods. This includes:
  • Using Orbs of Annulment, which normally have a chance to reroll all modifiers on an item.
  • Crafting with Chaos Orbs, which completely reforge all modifiers on an item.
  • Using certain crafting bench options, like removing specific modifiers.

What it allows:

• While it protects prefixes, "Prefixes Cannot Be Changed" does not restrict adding new prefixes or modifying suffixes. This opens up various strategic possibilities, such as:
  • Using Exalted Orbs to add a specific desired prefix modifier to an item with good existing prefixes.
  • Crafting with certain bench options that only affect suffixes, like adding resistances or utility modifiers.
  • Using veiled crafting orbs to unveil a new suffix modifier while safeguarding the existing prefixes.

Important considerations:

• "Prefixes Cannot Be Changed" is a metamod, meaning it can only be applied to an item that already has at least one modifier.
• It consumes any open prefix slot when applied, so you can't have both a prefix modifier and "Prefixes Cannot Be Changed" on the same item.
• It adds no stats or benefits itself, it purely acts as a protective measure.

Overall, "Prefixes Cannot Be Changed" is a versatile and valuable crafting tool for experienced players who want to carefully manipulate and improve their gear. It requires careful planning and understanding of its limitations, but can be instrumental in creating powerful and optimal items.

Here are some additional tips for using "Prefixes Cannot Be Changed" effectively:

• Decide on your desired end result for the item before applying it.
• Make sure the existing prefixes are worth protecting and synergize well with your build.
• Consider alternative crafting methods that achieve similar results without using "Prefixes Cannot Be Changed" if it doesn't fit your specific needs.

I hope this explanation and the accompanying images help you understand how "Prefixes Cannot Be Changed" works in Path of Exile! Feel free to ask if you have any further questions.

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PoE prefixes cannot be changed scour

After having rolled some desired affixes, one can utilize the Prefixes/Suffixes Cannot Be Changed meta-crafting mod to protect them while altering the item. In the example below, we're pleased with the following prefix modifiers:

• +1 To Level of All Dexterity Skill Gems
• +1 To Level of All Lightning Skill Gems

These are all prefixes. We don't care for the other modifiers. In this case, we can craft the (Prefixes Cannot Be Changed) to protect these mods and reroll the suffixes. We then scour the amulet, so only the prefixes and implicit mods remain. Note that this meta-crafing mod is also a suffix, so it will be wiped in the process.

Prefixes Cannot Be Changed example

The following image shows two influenced items. They all have of Prefixes mods: Prefixes Cannot Be Changed.

Related Meta-crafting modifiers

• Cannot roll Attack Mods
• Cannot roll Caster Mods
• Prefixes Cannot Be Changed
• Suffixes Cannot Be Changed
• Can have up to 3 Crafted Modifiers

Meta-crafting Unlock Location

Prefix / Suffix	Crafting Recipes	Cost	Unlock Locations
of Prefixes, Suffix, Local	Prefixes Cannot Be Changed	2x Divine Orb	The Coward's Trial
Suffixed, Prefix, Local	Suffixes Cannot Be Changed	2x Divine Orb	Oba's Cursed Trove
of Crafting, Suffix, Local	Can have up to 3 Crafted Modifiers	2x Divine Orb	The Putrid Cloister
of Spellcraft, Suffix, Local	Cannot roll Attack Modifiers	1x Divine Orb	Caer Blaidd, Wolfpack's Den
of Weaponcraft, Suffix, Local	Cannot roll Caster Modifiers	1x Divine Orb	Whakawairua Tuahu

PoE Meta Crafting

Crafting method	Prefixes cannot be changed	Suffixes cannot be changed	Cannot roll attack	Cannot roll caster
Orb of Transmutation	N/A	N/A	N/A	N/A
Orb of Alteration	YES	YES	N/A	N/A
Orb of Augmentation	N/A	N/A	YES	YES
Regal Orb	N/A	N/A	YES	YES
Orb of Alchemy	N/A	N/A	N/A	N/A
Chaos Orb	YES	YES	YES In conjunction with suffixes cannot be changed	YES In conjunction with suffixes cannot be changed
Veiled Chaos Orb	YES	YES	YES & NO In conjunction with suffixes cannot be changed for the reforge stage, but not for the unveil stage	YES & NO In conjunction with suffixes cannot be changed for the reforge stage, but not for the unveil stage
Orb of Scouring	YES	YES	N/A	N/A
Exalted Orb	N/A	N/A	YES	YES
Conqueror Exalted Orb	N/A	N/A	YES	YES
Orb of Annulment	YES	YES	YES Protects attack mods from removal	YES Protects caster mods from removal
Divine Orb	YES	YES	N/A	N/A
Fossil	NO Prevents usage	NO Prevents usage	N/A Prevents usage	N/A Prevents usage
Essence	NO Prevents usage	NO Prevents usage	N/A Prevents usage	N/A Prevents usage
Orb of Dominance	YES	YES	NO	NO
Awakener's Orb	NO	NO	NO	NO
Aisling veil	YES	YES	NO	NO

Eldritch

Crafting method	Prefixes cannot be changed	Suffixes cannot be changed	Cannot roll attack	Cannot roll caster
Eldritch Chaos Orb	NO	NO
Eldritch Exalted Orb	N/A	N/A	YES	YES
Eldritch Orb of Annulment	YES	YES	YES	YES

Harvest

Crafting method	Prefixes cannot be changed	Suffixes cannot be changed	Cannot roll attack	Cannot roll caster
Augment	N/A	N/A	YES	YES
Non-type to type	YES	YES	YES & NO Will not work if the mod removed is the metamod	YES & NO Will not work if the mod removed is the metamod
Reroll	YES	YES	NO	NO
Reroll+	YES	YES	NO	NO
Resistance swaps	YES	N/A Can't use if suffixes are locked	N/A	N/A
Reforge keeping prefix	N/A	YES	YES In conjunction with suffixes cannot be changed	YES In conjunction with suffixes cannot be changed
Reforge keeping suffix	YES	N/A	YES	YES
Reforge more likely	YES	YES	NO	NO

Beastcrafting

Crafting method	Prefixes cannot be changed	Suffixes cannot be changed	Cannot roll attack	Cannot roll caster
Prefix > Suffix	YES Will only add a new modifier	YES	YES & NO Will not protects attack mods from removal	YES & NO Will not protects caster mods from removal
Suffix > Prefix	YES	YES Will only add a new modifier	YES & NO Will not protects attack mods from removal	YES & NO Will not protects caster mods from removal

Scourge

Crafting method	Prefixes cannot be changed	Suffixes cannot be changed	Cannot roll attack	Cannot roll caster
Tainted Exalted Orb	N/A	N/A	YES	YES
Tainted Divine Teardrop	YES	YES	N/A	N/A