Message type: E = Error
Message class:  /SAPAPO/FOT -  
Message number: 451
Message text: Available WIP or goods receipt quantity is less than split quantity
Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.
To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.
Unfortunately, there isn't any extra information in this error notice.
First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).
Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.
You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.
The SAP error message /SAPAPO/FOT451 indicates that the available Work In Progress (WIP) or goods receipt quantity is less than the split quantity that is being requested in the system. This error typically occurs in the context of production planning and execution within the SAP Advanced Planning and Optimization (APO) module.
Cause: Insufficient WIP or Goods Receipt: The primary cause of this error is that the system is trying to split a production order or a planned order, but the available quantity of WIP or goods receipt is not enough to fulfill the requested split quantity. Incorrect Configuration: There may be configuration issues in the production planning settings that do not align with the actual inventory or production status. Data Entry Errors: Manual entries or adjustments in production orders or inventory levels may lead to discrepancies. Timing Issues: If the goods receipt or WIP is not updated in real-time, the system may not reflect the
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
/SAPAPO/FOT450 Order quantity of child order &1 is less than total WIP transfer quantity
What causes this issue?  During an FOT split action the system calculates the sum of the WIP transfer quantities specified in the mapping table to be ...
/SAPAPO/FOT411 Error in reading ACT data; check database consistency
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
/SAPAPO/FOT452 Cannot split more than available WIP; available WIP at RP &1 is &2 &3
What causes this issue?  You tried to split more than the available WIP quantity. Maximum WIP split from reporting point "&V1&" is &...
/SAPAPO/FOT453 A rounding error has occurred during goods movement
What causes this issue?  Due to a rounding error  the goods movement quantity transferred  from the parent has exceeded the quantity originally posted...
Click on this link to search all SAP messages.