How To Fix VV503 - El material de planif.& está bloqueado (no se puede verificar asignación)

SAP Error Message - Details

• Message type: E = Error

• Message class: VV - Requirements and availability

• Message number: 503

• Message text: El material de planif.& está bloqueado (no se puede verificar asignación)

¿Qué causa este problema?

The <GL:planning_material>planning material</> &V1& (plant &V2&)
belonging to material &V4& which you are processing is blocked by user
&V3&. The system has attempted several times without success to block
this material.

Respuesta del sistema

So as not to slow your work, the system stops its attempts at blocking
and does not carry out an assignment check.

¿Cómo arreglar este error?

Note that the transaction you are processing is not confirmed. You
should therefore carry out another assignment check
<DS:GLOS.availability_check>(availability check)</>.

Extracto de mensaje de error del sistema SAP. Copyright SAP SE.