The material description is presented on the Purchase Requisition's language and not on the user language in the SAP transaction MIGO

Here I am explaining the reason behind the different language usage of the material description in case of purchase requisitions and its subsequent postings, like the goods receipt posting in MIGO.

According to the standard system design it can happen that the material description is not displayed on the user's language but on the language of the purchase requisition.      

Explanation                

When we create a Purchase Requisition (ME51N), the document is created in the logon logon language (field EBAN-SPRAS).                                       
The language is not displayed in the document. We can only see it on the database.                                                  
 

Example:                                                                         
In ME51N:                                                             
->if we are logged on 'FR' we will see the material short text in 'FR' 
->if we are logged on 'EN' we will see the material short text in 'EN' 
                                                                         
But once the Purchase Requisition has been created, in ME53N:                                   
-> if we are logged on 'FR' or 'EN' we will only see the material short text depending on what we have in EBAN-SPRAS field.

This means that if it was created in 'EN', even if now we are logged on 'FR' we will see in 'EN'.                     
                                                                         
The program will select the following fields:
EBAN-MANDT                                                               
EBAN-BANFN                                                               
EBAN-BNFPO                                                               
EBAN-TXTZ01                                                              
EBAN-SPRAS                                                               
                                                                         
So if we created in 'EN' we will only see the material short text in 'EN' in ME53N. If we created in 'FR' we will only see the material short text in 'FR' in ME53N.

As a consequence, the document creation language will be considered in subsequent postings like the Purchase Order (ME23N) and the Goods Receipt (MIGO), even that logon language is different.